Sophos

Online support

Product maintenance

Contact support

Support services

MailMonitor for SMTP - Windows NT/2000/2003: changing the SMTP port used by the SMTP mail server or by Microsoft Exchange

Changing the SMTP port used by the SMTP mail server or by Microsoft Exchange so that MailMonitor for SMTP - Windows NT/2000/2003 can be installed involves editing the services file C:\WINNT\SYSTEM32\DRIVERS\ETC\SERVICES.

What to do

You will need to edit the services file C:\WINNT\SYSTEM32\DRIVERS\ETC\SERVICES and find the line:

smtp  25/tcp  mail  #Simple Mail Transfer Protocol

Edit this line, altering the section 25/tcp. Replace the 25 with a port number that is not used on that server. For example:

smtp  24/tcp  mail  #Simple Mail Transfer Protocol

Save the file. Restart the server to implement the new settings.

Check that your mail server is listening on the new port.

If you need more information or guidance, then please contact technical support.