[NTLUG:Discuss] weird sendmail domain problem

[Bug Hunter]

 /etc/mail/local-host-names

  make sure f.com is in that file.

On Wed, 8 Jan 2003 kbrannen at gte.net wrote:

> I've been working on RH7.2 (fully patched) machine with the weirdiest sendmail 
> (v8.11.6) error I've ever seen...and I'm looking for any ideas.  Yes, I'm 
> sorta desparate. :-)
> 
> Whenever anyone from the outside sends email to this machine, it replies with:
> 
> 553 Requested action not taken: mailbox name not allowed
> 
> But if you are on the machine and email, it works fine.  It's as if it doesn't 
> know what domain it belongs to.  Yes, I've got the domain in the 
> /etc/mail/access and /etc/sendmail.cf files.  Yes, hostname -f returns the 
> correct value (now, it didn't before I worked on it, plus a reboot).
> 
> One other clue is that it used to work correctly.  Then the machine got moved 
> to another location with a new IP address.  Yes, a nslookup on both the domain 
> name and the FQDN of the machine produce correct answers, both on the machine 
> and off (from my home machine).  Still, deep down, I believe this to be a DNS 
> thing; I just can't prove it.
> 
> Testing with telnet produces (IP & addresses changed to protect from SPAM):
> 
> $ telnet 1.1.1.1 25
> Trying 1.1.1.1...
> Connected to 1.1.1.1.
> Escape character is '^]'.
> 220 SMTP service ready
> helo gte.net
> 250 Requested mail action okay, completed
> mail from: k at gte.net
> 250 Requested mail action okay, completed
> rcpt to: root at f.com
> 553 Requested action not taken: mailbox name not allowed
> quit
> 221 SMTP server closing transmission channel
> Connection closed by foreign host.
> 
> Anyone have any clues?  I found all kinds of interesting sendmail things on 
> Google, but none of it helpful. :-/
> 
> TIA,
> Kevin
>