Hmailserver Change Smtp Port

It prefers immediate SSL negotiation followed by SMTP (old style SMTP over SSL) Eudora and Zimbra. Send Email with SMTP Server in C#, VB, ASP. Under the Advanced tab, change the Outgoing server (SMTP) port 25 to 587. Google IP address ranges for outbound SMTP When you set up email for your domain (for example, SPF records), you might need the IP addresses of the G Suite mail servers. Host = "smtp. on 03 August 2016 05:00 PM When creating a new user within your e-mail client, there are times when it is necessary to select a non-standard port number for outbound delivery. Address of the SMTP server host to relay the messages smtp_port TCP port that should be used to connect to the SMTP server. In order to relay mails through MailChannels, your hMailServer Mail Transfer Agent (MTA) must authenticate with MailChannels using the credentials provided to you and add the authenticated sender header to track the sender reputation. The settings are the same for any email provider you use with Mail. Physical as well as wireless connections are terminated at ports of hardware devices. The default port number of an outgoing SMTP server is 25: but a switch to another one can be needed: for instance, if you are facing issues with the SMTP connection (the client is not sending emails even if the server name is right) you can try to change the port as a troubleshooting measure. make sure your firewall has an exception for SMTP port 25. ini file has localhost at port 25 as the mail server/port. Home > smtp tcp port change free Most used for forwarding SMTP connections from your mail program to the right SMTP server, but you could forward any port type. As far as we know, the goal is to stop spammers from signing up for "throw away" accounts, and sending mail through open and/or anonymous relays. how to change SMTP port on Canon Image Runner ADV devices. Here are some SMTP and POP3 Settings and information for various providers that we have come across. Ensure that this port is not blocked or used by any other process on the Informatica PowerCenter Server. com account in an email client on your smartphone, tablet, or another computer. 1] I think the issue was with port 25. In the Select Configuration Task screen, choose “Set up Database Mail by performing the following tasks:” and click “Next”. (or just leave that field blank). Select Outgoing Server (SMTP) on the left pane of the Account Settings window. * To change this license header, choose License Headers in Project Properties. Installation or configuration of the SMTP server on Windows 2016 is the same as Windows Server 2012 except for a few differences related to the interface of both the servers. Setting outbound SMTP port to a number other than 25 Typically, outbound emails are sent to port 25, which is the default value for SMTP protocol. If set to 0, it will wait forever. It works on most current computers or devices and solves many of the common problems with sending email such as relaying denied errors or blacklisting issues. Enter the new port number and click the OK button. I'm using Hmailserver as an email server but also tried the built-in virtual SMTP server to see if could get it to listen as well. com for the Host. Overview hMailServer is a free e-mail server for Microsoft Windows. This is the standard port for sending mail, but it is often blocked by ISPs because spammers commonly use this port to send mail from compromised computers. sysadmin) submitted 3 years ago * by ortund I've set up hmailserver on my Windows Server and I've created the DNS records required to use it. In most cases, modern SMTP email clients (Microsoft Outlook, Mail, Thunderbird, etc. Some internet service providers (the people that offer you the internet connection) block outgoing traffic on port 25. 2011, by Lubos Dzurik Since Microsoft removed SMTP server service from Windows 7, it is not possible to use PHP mail() function to send emails via local SMTP service anymore. Port 25 is the default port used to transport or communicate email across the Internet using the SMTP protocol. On Windows 7 above telnet client has to be installed first via control panel (Windows Add/Remove Features) Following is a sample SMTP commands to send for a standard mail server listening on IP 12. keywords are placed in hierachies of blocks (and subblocks), each layer being delimited by '{' and '}' pairs. If you change your setting to your preference, then run a connection TEST; if everything works, then remove the account from the Outlook. First, we need to change the port on which hMailServer will listen for incoming SMTP mail. Start hMailServer Administrator 2. To do so, please open the Server Manager. - Now select your new email account and click on Properties. Finally, create a port forward or open port. Send email via your Gmail/Google Apps/Office 365 account from ISPs that don't allow port 25 traffic (or don't allow it reliably) or from devices that don't support authenticated SMTP Install hMailServer (for Windows 2000 through 2012) Settings > Protocols > SMTP > Delivery of e-mail tab Number of retries: 10 Minutes between every retry: 30. 0 à right click on SMTP Server à Properties 3. * To change this license header, choose License Headers in Project Properties. How to set up a new email. conf daemon_smtp_ports = 25 : 587 to daemon_smtp_ports = 26 : 587 Opened firewall for this port, but no mails are delivered any more Do i miss some config, dovecot?. Select an authentication method from the following: [Anonymous]: The user name and password are not necessary. Error: Could not connect to this SMTP server. com handles all outgoing mail, while the Post Office Protocol server, pop. I deinstalled, re-installed hmailserver, tried othe mail servers as well,. All these servers use SSL/TLS. Before you start. com -L 10025/localhost/25 This opens up a ssh tunnel which routes all mail sent to port 10025 on my local machine to port 25 on Dreamhost's server. Change port 25 to 587. How to change smtp port on TP2 HowardForums is a discussion board dedicated to mobile phones with over 1,000,000 members and growing! For your convenience HowardForums is divided into 7 main sections; marketplace, phone manufacturers, carriers, smartphones/PDAs, general phone discussion, buy sell trade and general discussions. I need to change the imap/pop3 settings but i can't get into : pop. - Now select your new email account and click on Properties. Send Email from localhost/WAMP Server using PHPMailer/SMTP. For more information on how to configure the SMTP settings please refer to the knowledge base article -- Send Automated Emails from SmarterTrack. Outlook doesn't deal well with SSL on port 25 using the STARTTLS command. In the Select Configuration Task screen, choose “Set up Database Mail by performing the following tasks:” and click “Next”. Initially, the production section should look something like this: You may also have to change the port, depending on your Exchange server's configuration. Test: Test backup directory ERROR: Backup directory has not been specified. 3, a main administrator password exists for hMailServer. Sometimes you need a connection to go through in order to play a game or run an application. I will not say those two, because you might be using more than two. I have port 25 heavily used elsewhere, and I beleive this is preventing connection. If I remember correctly, hotmail uses a non-default port and, if that is the case, we simply can't use hotmail with IBM BPM using the IBM supplied email mechanisms. Authentication by an Exim client : MDaemon: User Manual pages 48-49, Section Setup Menu under Server Settings in the Port section you can change the port your Smart Host is set to use. As per hMailServer guidelines, use “143” for IMAP port, “993” for IMAP via SSL/TSL and either “465” or “587” for SMTP port. ---Open the Mail program (the blue postage stamp in the Dock toolbar). This allows us to send internal SMTP traffic via port 25 to our SMTP relay server, which then packages it up and encrypts it via TLS and port 587 to the Microsoft cloud. -I have set the Fully qualified Internet host name to "preview. Microsoft is migrating all Outlook. There are many reasons why you would want to configure Postfix to send email using an external SMTP provider such as Mandrill, SendGrid, Amazon SES, or any other SMTP server. The default setting is port 110. In which file I can see the port value defined. If your client does not support SSL/TLS please use port 587 and disable SSL/TLS. Port 25 is the standard port that is used over the internet for SMTP communication. hMailServer for Outbound Only SMTP Server Posted on February 20, 2014 by gerrytan If you ever needed to write program that sends email, most likely you'll need a SMTP server. Free dynamic DNS and static DNS service to any top level domains. Only change the items specified - you do not need to change your incoming settings These instructions are only for Microsoft Outlook 2016 - for other email programs please see How To Setup AuthSMTP We have instructions for both default SMTP port and alternate SMTP port configurations - alternate port is generally used if your ISP blocks the. You can use it with personal emails, or even with your website if you are sending emails for things such as contact forms, newsletter blasts, or notifications. AuthSMTP is the outgoing SMTP email service for your e-commerce website, mailing list or email application on most current computers and mobile devices. Microsoft Windows 10 Mail App Important Points. I have hmailserver set up and accepting email for projectattack. com for a How does the rocket change its orbit. To do so, please open the Server Manager. Network Engineer Syncreon Logistic and Supply Chain September 2014 – October 2019 5 years 2 months. On the E-mail tab, click Server Settings The Server Settings dialog box appears. Port is 25 by default. Resolved Change from SMTP port 25 to another port. by changing sending method to SMTP: You have to login to webmail using administration webmail (it was entered during horde5 instalation). Any ideas on what I need to change to make this work?. Typically, this is the default SMTP virtual server. Change that number from 25 to 587. In order to change DavMail settings, double click on the tray icon or right click on it and choose Local SMTP port:. Remember that you may need to perform. Click Workspace Email. Authentication Method. Popular email clients like Gmail, Yahoo, and Office 365 are in a constant battle with email spammers. Test: Collect server details hMailServer version: hMailServer 5. In this video, I have described how can you configure SMTP settings in hMail server and then configure email client (in this case live mail essentials) to send and receive emails using hMail server. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems. Well, when I finally click on the properties of the default SMTP server, it brings up the properties tab set for the default SMTP server, but where you are suggesting the list of IP address should be is just "All unassigned". They also can see my hMailServer is running. 0 to 2048 are IANA authorized known port no. I can't run both the local SMTP and the hMailServer SMTP at the same time (Windows one refuses to start). Hi Peter – This approach will certainly work, but is a royal POA when you arrive at your Toronto hotel at midnight & need to go looking for the local ISP settings, change them, change them back when you get home, etc. If in doubt try port 225 then change to either 587 or 25 if 225 wont work. com is replaced with my real supplier's named SMTP server, and 465 is the port. I have attached my assp. Save the change; Specifying SMTP relayer. I want to change the default port Sharepoint Services uses for outgoing mail to port 8025. Restart Thunderbird. Gmail works well with Thunderbird, but it's quite common to have problems configuring it because it's not standard-compliant. Whether you want to build a web server for a content management system, host an email server, or create a system backup, there are a few services that are essential to building an effective cloud. We don't currently have a guide for Exchange 2007, but a user has submitted the steps he took to get a working configuration. Change your Send-Connector's SMTP port from 25 to 3325 or what ever port you need. This is what STARTTLS was created to do. 240 on port 25. Changing outbound SMTP port settings. A Usual Question people have in mind is regarding SMTP Port 25, 465, 587, 2525- Which port should I use? Choosing an SMTP Port can be tricky. The message could not be sent because the connection to SMTP server smtp. the HTTP server (WEB server), the SMTP server (e-mailer towards the Internet), and the POP3 server (e-mailer towards the internal users). Often in a complex enterprise Infrastructure Oracle DBAs face issues by enabling SMTP mail traffic on the databases through corporate email gateway servers. I followed those step to get where I am now. A Quick Guide to Using Alternate-port SMTP with Exchange This guide is for Exchange 2003. Test: Test backup directory ERROR: Backup directory has not been specified. For example, the SMTP service rejects all connection, or connections from special IP/Port, or the credential sent to the SMTP is invalid. This starts the Database Mail Configuration Wizard. POP3 Server: Enter the IP address or the host name of the secondary SMTP server. Enter the admin password (12345678 is default) and touch [OK] Enter network and email smtp settings 4. Running in Debug. com and have opened port 25 to accept incoming traffic: smtp. Outlook 2003: Start your MS Outlook software. com Calendar for Windows 10 Outlook 2019 for Mac Outlook Calendar for Windows 10 Outlook for. Change to: remote_smtp: driver = smtp interface = 12. 16 Validating Exchange 2013 Server under Real Server. Checking another issue I noticed that McAfee Virus Scan 8 was blocking port 25 which is used by SMTP. Was able to get this working with HmailServer. Here are the settings using in Exchange 2000. Right-click, and select Add SMTP Services. Google IP address ranges for outbound SMTP When you set up email for your domain (for example, SPF records), you might need the IP addresses of the G Suite mail servers. Select the Tools menu and click Accounts. This page enables you to configure Email Server settings. Please open hMailServer, select the target and hit Connect button. This list is without any warranties and not sorted alphabetically. Install and configure Dovecot on CentOS. The easiest way to bypass this problem is to enable SSL in your email client and change the port to 465. IMAP server settings for Yahoo Mail. Here I am changing it to 9267 9267 inet n – n – – smtpd Now restart the postfix /etc/init. Change Default port is required. Set the remote host name with the DNS of your email provider, for example, smtp. For some reason you might want to change default SMTP port number 25 Exchange 2007 is using. Find your way to the port forwarding section. It avoids having to run an SMTP server as a forwarder, and it doesn't directly authenticate with Google, so I can set each client device to use different credentials. Specify the Exchange 2013 IP Address -10. Easy WP SMTP allows you to configure and send all outgoing emails via a SMTP server. on 03 August 2016 05:00 PM When creating a new user within your e-mail client, there are times when it is necessary to select a non-standard port number for outbound delivery. When an email client or outgoing server is submitting an email to be routed by a proper mail server, it should always use SMTP port 587 as the default port. Although very advanced and feature packed it has a small foot print and it is very fast and reliable. Then the second instruction, I found I had "Server smtp. Check your network connection and that you entered the correct information in the Account preferences. Right-click, and select Add SMTP Services. Manual set up. For the supported address types, click on the SET button for Internet. 3, a main administrator password exists for hMailServer. You can see Add domain button here, click it, add the specific domain and click Save. To install the SMTP service on IIS 6. Click Outgoing Server (SMTP) On the right hand side next to server name it should say Port: 25. On the Domino server, I also have hMailServer installed on port 25. Authentication Method. Instead of the automatic detection mode, you can specify a preferred DNS server. Before installing assp, hmailserver sends and receives email just fine. Again click on “OK” button and then click on “Apply” button. # re: SMTP and Vista Vista blocks port 25 (used for sending emails through Outlook) if your IP address is Dynamic. NOTE: You may also use your ISP SMTP (e. The server names are:. Enter a TCP port in the Port text box. The default port number of an outgoing SMTP server is 25: but a switch to another one can be needed: for instance, if you are facing issues with the SMTP connection (the client is not sending emails even if the server name is right) you can try to change the port as a troubleshooting measure. Try a different port number if port 2525 is blocked at your location. 4) What ports does SSL use? Theoretically SSL can transparently secure any TCP-based protocol running on any port if both sides know the other side is using SSL. Also, be sure to add the exception for the additional port in the firewall settings. Clicking on the Advanced button from the previous illustration will yield yet another display where the default SMTP port number can be reassigned. Setup iPhone Email - how to setup your iPhone Email App with Gmail, Hotmail, Yahoo, Hosting, and other email accounts. Can contain up to 32 characters. Media Temple SSL. com has been a leader in email relay services for over 20 years. so even if you use 587 (which is apparently under the SAME host) for sending, the dst port will still be 25 and wil be blocked by globe. I am total noob about Unix and CLI. Send email via your Gmail/Google Apps/Office 365 account from ISPs that don't allow port 25 traffic (or don't allow it reliably) or from devices that don't support authenticated SMTP Install hMailServer (for Windows 2000 through 2012) Settings > Protocols > SMTP > Delivery of e-mail tab Number of retries: 10 Minutes between every retry: 30. PORT NUMBER should automatically Be Set to 465. Please open hMailServer, select the target and hit Connect button. Outlook 2003: Start your MS Outlook software. In order to relay mails through MailChannels, your hMailServer Mail Transfer Agent (MTA) must authenticate with MailChannels using the credentials provided to you and add the authenticated sender header to track the sender reputation. The standard port is 25. But nobody will send you anything there, except possibly IMAP/SMTP clients that you control. Navigate to Host These users have full access to manage the settings and content of all sites with this DNN installation, including the Host site. How to Change SMTP Port on Apple Mail (MacOS) If the issue is with your Computer or a Laptop you should try using Reimage Plus which can scan the repositories and replace corrupt and missing files. (SMTP) port settings. Change the default SMTP port and authentication settings: Make sure the Override default SMTP port option is chosen. Exchange 2007 uses RECEIVE AND SEND connectors, one for receiving mails and other for sending mails (obviously ;) So you need to change ports on those connectors. NOTE: You may also use your ISP SMTP (e. Exchange ActiveSync (MobileSync) vs Good Old IMAP + SMTP Many years ago, it used to be that if you had a cell phone that had an email program included, you could configure using IMAP and SMTP to allow you to check email and send email…. How to use an alternate SmartHost SMTP port in Exchange 2007 and Exchange 2010 How do I change SMTP port on a Exchange 2007 SmartHost? How do I change SMTP port on a Exchange 2010 SmartHost? Solution: Follow the guide below to configure Microsoft Exchange 2007 or Microsoft Exchange 2010 SmartHost using a different port. Is this how you entered the port? Then I clicked the Enable SMTP Authentication entering my userid and password and then clicked. I don't understand your problem. Configure Postfix to use an alternate port for SMTP. Receiving messages worked great, but sending was still a problem, because I had to use alias sender addresses: Thunderbird wasn't a problem, but when I used aliases in Outlook 2010, all messages where sent "on behalf of" (" primary. 17, and to allow 192. You need to know the exact name of this address if you are configuring or troubleshooting an email program. Re: Change outgoing SMTP port I don't want to change the port iRedMail is listening on, port 25 is OK for that. SMTP relaying is the transmittal of email from email server to email server. but prior to this to do a simple test but very quick one since your server is connected directly to the public network. I have port 25 heavily used elsewhere, and I beleive this is preventing connection. projectattack. cf file and change the given below value vi /etc/postfix/master. By default the SMTP Send Connector is set to use port 25 with a Smart Host. d/postfix restart Check the port no. com account to another mail app, you might need the POP, IMAP, or SMTP settings for Outlook. SMTP server can be tested simply by using telnet client. Change the SMTP port to 465; Enable SMTP Auth using the same credentials as IMAP; That should be all thats needed. TLS with port 25 or 587 My other mail service doesn't support SSL or TLS If your other mail service doesn't support these secured connections, you can choose port 25 , then select the Unsecured connection option that appears. The configuration steps below show you how to add a domain, add an account, create an alias, setting the server host name, configure RFC settings and configure SMTP relay options to prevent open relay. Haben halt beide auf dem selben Port gelauscht. Port 25 is blocked in the local network and there is no way to open it. Server name "pop. I will not say those two, because you might be using more than two. How do I change SMTP server hostname or IP address in AIX? In VI search for the “DSsmtp” string and make the change according to your system configuration. If you want to run your own SMTP server, hMailServer might be a good one to try first. The only other thing you can do, but it's sort of a ridiculous hack Have the primary SMTP server (at let's say 192. Hello guys, I want to change the SMTP port for alerting emails. For a list of Amazon SES SMTP endpoints, see Connecting to the Amazon SES SMTP Endpoint. Select Use SSL and the certificate. DNSBLChecksAfterMailFrom – By default, hMailServer runs DNS blacklists checks after SMTP/MAIL FROM. Save the configuration to persist the changes. hMailServer is a free, open source, e-mail server for Microsoft Windows. com handles all outgoing mail, while the Post Office Protocol server, pop. Yes Frontier blocks port 25 to all smtp servers except Frontier's own mail system. Otherwise, skip to step 9. The ProtonMail Bridge software is currently only available for paid ProtonMail users, although this may change in the future if we have the infrastructure to support free users as well. To check, if a port is in use on a Windows based system, the below command can be run in the command prompt. I changed in Advance setting, the smtp port from 25 to 587, But I still see the traffic on my firewall through port 25. DNSBLChecksAfterMailFrom – By default, hMailServer runs DNS blacklists checks after SMTP/MAIL FROM. com Calendar for Windows 10 Outlook 2019 for Mac Outlook Calendar for Windows 10 Outlook for. you must change the outgoing server port number to 587 or 465 to remedy the situation. Go to Tools > Account Settings. Sending emails is the major part of any web application, most of the webapplications today needs a functionality to send emails may be it is used to send newsletters, promotional emails, scheduled reports or username/password informations. Configuring hMailServer to use the SSL certificate 1. com - sendmail configuration ‎09-02-2013 06:30 AM - last edited on ‎09-02-2013 08:00 AM by KaLin Message 3 of 6. sandip@gmail. I may need to use the port 587. com, smtp-server. Over the last year or so SES added the ability to receive emails but this is very complicated and confusing which is why I install Hmailserver to receive the email. The same process is used in the terminal of Unix-based systems such as Linux and Mac OSX. The default port number of an outgoing SMTP server is 25: but a switch to another one can be needed: for instance, if you are facing issues with the SMTP connection (the client is not sending emails even if the server name is right) you can try to change the port as a troubleshooting measure. Even though the size of this documentation might indicate otherwise, SquirrelMail is quite easy to configure. Now in practice, if I configure port 587 for SMTP on hmailserver then it all works ok logging on and sending mail externally (using outlook for instance). here's Miles Libbey from Yahoo on sender authentication. On the right of the list of email addresses in your account, you can see a column called Relays. By default, the php. Here are the steps for setting up hMailServer as an email distribution server. Select the SMTP server for your domain here. In that case, you should configure hMailServer to send all email through your ISP's email server. Change Default port is required. Where is port 25 heavily used?. A quick Google search and a visit to PLDT’s DSL website revealed the cause of the problem. hMailServer is a free email server for Windows. Click the click here link. The difference is: IMAP syncs your email with the email server. How to send email from C# What is SMTP ? SMTP (Simple Mail Transfer Protocol) is a part of the application layer of the TCP/IP protocol. hMailServer. How to change SMTP port for Android Some Cell Phone email providers and Internet service providers (ISPs) block port 25 to reduce the amount of junk mail that originates from their domains. Default SMTP port is 25. However one drawback of using the SMTP client submission method is that it requires the sender address to be on your local domain. See also: A List of SMTP and IMAP Mail Server (Mail Server List). To use the G Suite SMTP relay (recommended and most secure setup option): From the Admin console, click Apps G Suite Gmail Advanced settings. Usually, email scanning programs seamlessly use local proxy to scan & send mail. Select your account, then click Edit. also which are bydefault used by manyapplication for. After installing assp, I cannot send but can receive emails. Hab den deaktiviert und den hmailserver neu gestartetjetzt läuft die Zustellung der Mails intern. Easy WP SMTP Features. Setting outbound SMTP port to a number other than 25 Typically, outbound emails are sent to port 25, which is the default value for SMTP protocol. We are showing how to use one called hMailServer (www. 0 Manager to open IIS 6. DavMail configuration. Click the Outgoing Server tab and check the My outgoing server (SMTP) requires authentication option. Hi! it's possibile change SMTP port only for 1 account? Or add another port? The service provider of one of my customer want that this port must be 587 instead 25. Remote TCP/IP port: TCP/IP port of the SMTP relay server on which it listens. Change the SMTP Port Number for Email Reports. To better demonstrate how to send email in C# using SMTP protocol, let’s create a C# console project named “mysendmail” at first, and then add the reference of EASendMail in your project. Port 25 (the > > traditional SMTP port) has been blocked by Globe Broadband. This makes the server compatible with most email clients available. I do a diagnostic run in the hmailserver admin and I see all greens but the local connection. com as internal relay. By design a firewall blocks all incoming and outgoing connections to the Internet unless otherwise specified. We implemented SMTPS (vs. Under RVM your mailcatcher command may only be available under the ruby you install mailcatcher into. Ich hab gestern festgestellt das der SMTP-Service von Windows noch lief. » Email sending. conf is the configuration file which describes all the keepalived keywords. Exchange 2013 the default smtp port is 25, but my ISP only uses port 587, so how do I change the smtp port to 587 (and for which of the 4 receive connectors)? · Hello, If you. and here is the solution I got. mailserver. combut we use office365 so I had to I need to setup an hMailServer for outgoing email only. Messages: 6. Right-Click on Database Mail and choose Configure Database Mail. hMailServer는 가볍고 무료로 배포되므로, 쉽게 사용할 수 있습니다. You need to know the exact name of this address if you are configuring or troubleshooting an email program. uk domain - I can connect to the server through port 110 pop3 using both gmail and mail. The Chilkat components share the same underlying TCP/IP socket code, so when there’s a connectivity problem with a server (i. The default port number for SMTP services is 25, but if your SMTP server runs on a different port, you must also specify it via the Port property: Mail. To check, if a port is in use on a Windows based system, the below command can be run in the command prompt. com to send out my email. SMTP is used to send mail. You can change the port number used for communications between JP1/AO and the SMTP server in the System Settings area. It runs as a Windows service and includes administration tools for management and backup. This article will show you how you can check to see if Port 25 is blocked on your network. Remote host name: This is the host name of the SMTP server where hMailServer will deliver all remote emails. but we have some other port no. SMTP is an acronym for Simple Mail Transfer Protocol which is the protocol used to transport email messages from computer to computer until they reach their destination. SendGrid's SMTP API allows developers to specify custom handling. We try to keep this list updated as much as possible. SMTP settings are only for sending email; you'll also need to provide the settings for receiving emails. In this video, I have described how can you configure SMTP settings in hMail server and then configure email client (in this case live mail essentials) to send and receive emails using hMail server. With all the services that the cloud offers, it can be difficult to figure out where to start. I want to change the default port Sharepoint Services uses for outgoing mail to port 8025. Enter the IP address or host name of the SMTP server. Click to expand ISPConfig just checks port 25, so it's normal that it shows Postfix as offline if you change the port. Next to the default features like SMTP, POP3 and IMAP, the software is capable to detect spam and also a free virus protection like ClamWin can be added. However, it can happen that your ISP blocks outgoing traffic on the SMTP port (25) to all computers except their own email server. I recently added a new domain and it will not receive emails. Hinckley, UK.