SMTP Relay

[Chad Brindley]

Hi,

Version: HPUX 11.23.

We are soon to change our SMTP server which will live on a different subnet from where our HPUX servers will live.

Recently we turned off our exchange server and the mails I used to receive from the HPUX boxes were not delivered to me. We turned on the exchange server and after a short delay the emails I was expecting came through.

I dont know a lot about sendmail but I looked in the sendmail.cw file and it has the hostname of the sending server in.

Any idea where I change the SMTP server for sendmail?

Its also worth noting the old exchange server is on a different domain to the new exchange server.

Regards,

Chad

[Steven E. Protter · Accepted solution]

Shalom Chad,

vi sendmail.cf

in /etc or /etc/mail

DShostname_of_new_relayserver

or

DS
[192.168.0.10]

If 192.168.0.10 is the ip of the new relay server.

/sbin/init.d/sendmail stop
/sbin/init.d/sendmail start

Done

SEP

[Tim Nelson]

Another option.

let's say you configured the DS macro in /etc/mail/sendmail.cf to smtp.mycompany.com

You can just change the IP address in /etc/hosts or if DNS then have DNS guy just change the IP there if possible. This way no changes to your sendmail.cf is neccessary. Everything is transparent.

[Chad Brindley]

Shalom both,

This works fine for me now, I made the change to the Macro DS using the SMTP servers virtual name.

I then restarted sendmail and I did a test;

mailx -s "subject" @
mail test from unix
.

Many thanks,

Chad