Sendmail append my domain name to sender!!

[LewisLam]

Hi,

I have a question on sendmail. I am using sendmail to receive emails for several domains and forward the emails to the appropriate email servers. I noticed that when the "From:" field of incoming emails do not contain a domain name, the domain name of my mail server will be appended to the "From:" field of the email. For example, when there is an email with the following "From:" field:

From: "ABC"
To: somebody@somedomain.com
Subject: Test

sendmail will append its domain name to the email as:

From: "ABC"@mydomain.com
To: somebody@somedomain.com
Subject: Test

Anybody knows how to prevent sendmail from doing this?
Any help is appreciated. Thanks.

Lewis

 

[RhythmAce]

Check to see if either of these is in you sendmail.mc file:

FEATURE(always_add_domain)dnl
MASQUERADE_AS(`yourdomain.com')dnl

If so, delete or comment them out by putting "dnl" in front of those lines. Then you must run m4 to recompile sendmail.cf and restart sendmail.

 

[LewisLam]

Thanks. I have tried it but it still doesn't work. Any idea?

Lewis