I have a sendmail configuration question:
I just upgraded to sendmail 8.9.0 and realized that the configuration
has changed from earlier versions. I went to the sendmail faq site
) where they have a very nice tutorial on
sendmail. My particular problem was that the new version of sendmail
turns off relaying for other hosts by *default*, which means that
not only spammers will have a hard time to abuse your host for relaying
spam, but also accountholders on your system who use popmail will have
trouble to get their outbound mail relayed.
Anyway, on that faq there is a section that deals with this issue:
and it mentions a /etc/mail/relay-domains file, and "features" that can
be added. How do I optimally configure this
file such that mail works properly for popmail clients, no matter where
they come from (I have a few coming in from outside of our domain using
different ISP's, which may change from time to time)?
They do not show an example of the correct syntax of this relay-domains
file, and was wondering if someone here can tell me how to set this file up
Right now I have:
I am not even sure if this is the correct syntax.
is supposed to let everyone use my
machine for relay (including spammers) and FEATURE(rbl) is supposed
to deny service to sites listed on the public spamming blacklist at
(what a great idea!). I am not sure about the
syntax and also not sure if I need other configurations to make this
work. Any help with this would be appreciated...