[TriLUG] sendmail and alternate ports

[Jon Carnes]

http://www.sendmail.org/faq/section3.html#3.39

To do it only for your domain, use /etc/mail/mailertable:
        yourdomain.com          mysmtp:mail.yourdomain.com

where 'mysmtp' is an exact duplicate of the 'esmtp' mailer definition, 
except for the port number in 'A=...'. Of course, change 2525 to whatever 
alternate port number you wish to use. 

===
At HAHT we run a firewall that reflicts a specific high port (which will 
remain nameless) back down to port 25 and then redirects it to one of our 
mailservers.

Best of Luck 

On Thursday 06 June 2002 05:52 am, Rodent of Unusual Size wrote:
> I'm at LinuxTag in Germany, and whomever is providing the network
> is blocking port 25 (SMTP).  Don't ask me why.. :-/
>
> Regardless..  Normally, when sendmail speaks to another system
> it will use port 25.  Does anyone know if there's a way to tell
> it "when you connect to mail.foo.com, use port 4000 instead of 25;
> go ahead and keep using 25 for all other systems"?