RE: Sendmail not able to send to external addresses.

["Cowles, Steve" <steve stevecowles com>]

Cleveland mail winnefox org wrote:
> Hello,
> 
> My head's becoming awfully bruised from banging it on my desk. I'm
> hoping someone can help me out. I've got a redhat 9 box running
> sendmail, spamassassin, and mailscanner. When I send an email from
> that box to my exchange server, it works fine. Now, if I try to send
> mail to an external email, such as my home address, it doesn't work
> at all. I end up getting an undeliverable message back. I looked at
> my maillog, and it says this: 
> 
> Jul 31 13:19:17 mystique sendmail[22305]: h6UCACSC011093:
> to=<jody 4clevelands com>, ctladdr=<ellis winlit org> (503/503),
> delay=1+06:09:05, xdelay=00:00:00, mailer=esmtp, pri=11190430,
> relay=4clevelands.com., dsn=4.0.0, stat=Deferred: Connection refused
> by 4clevelands.com.

Exactly when did you send the above e-mail? The delay shows its been queued
for delivery for 1 day:6 hours:9 minutes and 5 seconds. Are you sure your
referenceing a "current" problem?
> 
> Any ideas?

Based on the status entry... it looks like sendmail attempted to connect to
4clevelands.com, but for some reason the connection was refused. Duh! This
could either be a firewall blocking outbound connections on port 25 -or-
sendmail is announcing itself (HELO) incorrectly to 4clevelands.com and is
being rejected. I know I have my MTA confgured to reject MTA's that do not
announce themselves correctly during the HELO handshake. Fricken spammers do
that all the time.

Steve Cowles