Sendmail with explicit routing

[Rob W. Thompson]

I have an HP9000 rp5470 running HP-UX 11i v1. Due to application issues I cannot upgrade sendmail versions (8.9 in use). My 'box' is not the primary mailserver and our primary DNS server is a bit flakey and out of my control. Due to the third party applications nature emails are essential to our business office. With out having to reconfigure 500+ GroupWise clients, is there a way to force sendmail to skip the dns server and deliver/route directly to the primary mailserver?

[Steven E. Protter]

Shalom Rob,

Yes.

edit your sendmail.cf file.

Change
DS

to

DShostname_primary_mail_server
or
DS
[ip address of primary mail server]

Examples:

DSexhange1
DS
[192.168.0.10]

Save the file.

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

tail -f /var/adm/syslog/mail.log (check the name it will be obvious).

Send some mail from the server.

At this point it should be directly forwarded to the primary mail server.

Gotchas: the primary mail server must be explicitly configured to permit your rp5470 server to relay mail, otherwise your mail log will be full of relay denied messages.

Done

SEP

[Rob W. Thompson]

While not getting any relay denied messages, mail still takes the same route to the mailserver as before. Any other suggestions?

[Rob W. Thompson]

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