sbs2003 & port 587

[sonoma1993]

I just found out today that comcast made some changes to their network for sending email. They are blocking port 25 and noww requireport 587 send to outgoing mail. How do I setup my sbs2003 server to use port 587 to send email?

 

[RebateMonger]

Microsoft: Hot to change SMTP port 25 to another port.

"How to Change the Outbound TCP Port

NOTE: Every remote SMTP server that you want to communicate with must be configured to accept connections on the specified port. In most cases, you do not want to change the default port setting.

To change the outbound TCP port, follow these steps: 1. Start the Exchange System Manager.
2. Locate and click Servername, click Protocols, and then click SMTP.
3. Right-click the Default SMTP Virtual Server object, and then click Properties.
4. Click the Delivery tab, and click the Outbound connections button. Set the TCP port to 26 (or whatever value you require).
5. Quit the Exchange System Manager for the changes to take place.
All outbound SMTP traffic is now sent to port 26 on other servers.

NOTE: For these steps, the Display routing groups check box is enabled on the Exchange Organization Name properties in a mixed mode site."

Another option might be to use a Comcast "Smart Host" for sending email (if they offer one...Cox does). You send your mail to Comcast, which then forwards it from Comcast's mailservers. This is easily done from Exchange.

 

[sonoma1993]

thanks rebatemonger

 

[redbeard1]

A number of ISP's have gone to restricting port 25 on dynamic IP addresses, which are usually treated like home user type connections, even if it is a business account. I have not run into a problem with the restrictive ISP's around here, if the servers are on a business class static IP.

Do you have a static IP? Is this server for a business?

 

[stash]

You could also configure your server to use a smarthost for sending email. Comcast's is smtp.comcast.net

edit: RM already covered it 🙂