sendmail - relay denied

[gudrun]

We are setting up sendmail and are
getting the message "550 5.7.1 xxx@xxx.com relaying denied" from
MS Outlook when trying
to send an e-mail extrenally.

Internal e-mails are relayed just fine
and inbound external e-mails are working
just fine. What configuration should
we be looking at?

 

[Bangieff]

joe /etc/mail/sendmail.cf

#Hosts for which relaying is permitted ($=R)
FR-o /etc/mail/relay-domains

 

[pmkincaid]

Another way, and a little easier to configure and control who and what can relay/use your mail server, is by using the access_db directive when you build your .cf file.

Within the cf/cf directory of the source code, find your .mc file and add:
FEATURE(access_db)dnl
Then rebuild your .cf file.

Now you can start using /etc/mail/access file to control who can do what.

Take a look at the README and sendmail.org for exactly how to use the access file.

Hope this helps,
Paul