> Hello. I need help ASAP! I just upgraded our server to slackware 3.5 and it
> comes with sendmail 8.9. I'm now encountering the following problem:
>
> Sep 15 14:14:18 foo sendmail[1757]: OAA01757: ruleset=check_mail, arg1=<ravara
> @local.foo>, relay=[10.0.3.14], reject=501 <ravara@local.foo>... Sender domain
> must exist
>
This is one of security features attached in your default
"slackware" sendmail.cf
The sender must have real domain in his address.
If you want to disable this, strip out the ruleset in sendmail.cf
(I don't remember which one)
-Bimo-
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