Sendmail Relay to Exchange

[KapilRaj]

Can sendmail on my unix machine relay to an exchange server for mail delivery ?. I want to send mails , I don't want to recieve them.

Regds,

Kaps

[James R. Ferguson · Accepted solution]

Hi Kaps:

Configure the "smart relay" macro in '/etc/mail/sendmail.cf' :

DSexchange.abc.com

...where "exchange" is the smart relay name corresponding to your Exchange server. This relays all non-local mail to the relay host via SMTP.

Then, test with:

# mailx -s "Test Message" kapil@abc.com < /dev/null

Regards!

...JRF...

[Steven E. Protter]

Shalom Kaps,

Don't forget that Echange denys relay by default (What batman a secure microsoft product?).


Relay must be authorized by IP address in the exchange configuration.

What does /var/adm/syslog/mail.log say?

So long as sendmail is not running the server will receive no mail.

SEP

[KapilRaj]

Thank you guys. I don't have a working setup now. I am planning to set up some unix boxes in a windoZ env ;) .

Thanks for your help. I did know how to setup a Relay server in the DS macro. But was'nt sure if it works the same way with MS-Exchange server as well.

Regds,

Kaps

[Colin Topliss]

One thing I didn't see mentioned...

sendmail is not an open relay by default. It will NOT relay mail for a host it can't resolve the name for. You'll see your clients erroring with a DSN error (actually means a DNS error more or less).

Your relay either needs to have access to a name server, or you need to add entries to your local host file (its not the nicest solution, but it really depends how many hosts you want to relay).