domain of sender address user@domain.com does not exist

[ScalixSupport]

Obviously, domain.com and mail.domain.com are different in the eyes of DNS.

If you're sending out user@domain.com and sendmail can't resolve domain.com, you'll get the error. It sounds like you don't have a DNS entry for domain.com in your internal DNS setup. Is that correct ?

Cheers

Dave

[KevinDSomers]

No.

I have an internal DNS server (running on Windows 2003) running Active Directory with the domain.com (for example) . I have a host record for mail.domain.com and an MX record for domain.com pointing to the Scalix server.

On the Scalix server my /etc/hosts included

127.0.0.1 localhost.localdomain localhost
192.168.10.23 mail.domain.com mail

after I changed the bottom line to:

192.168.10.23 mail.domain.com mail domain.com

It took off. Its not really a problem, I was just curious.

Thanks