[TriLUG] Sendmail problems

[Jon Carnes]

You're getting external mail.  So you are fine.  If you want another
test point then send me your email address and I'll drop you a note ala'
Road Runner.

The warning you are seeing simply means that someone attached to your
server - verified that it was a mail server and then detatched (they
didn't send any mail to you).  

This can happen for a lot of reasons.  The most common seems to be an
anti-spoofing attempt by folks recieving mail *from* you. You send mail
to foo.com, your mail server takes the mail and makes a connection to
foo.com's mail server, foo.com's mail server holds open the connection
but doesn't accept the mail for delivery (yet), foo.com's mail server
does a simple connect back to your mail server to verify it, then it
accepts your mail

Check your mail logs and see if you are sending mail to some of the
servers that are verifying you.

Jon Carnes

On Sun, 2003-04-20 at 22:13, Joseph Tate wrote:
> I've been having a problem with sendmail. I got a ton of "did not issue 
> MAIL/EXPN/VRFY/ETRN during connection to MTA" over the last few days, 
> but have received none but locally delivered mail.  The hosts that are 
> giving me this include moya.trilug.org.  Now I know this isn't probing 
> stuff. Something is hosed somewhere.  I can send e-mail just fine, but 
> haven't received any outside mail since Friday.  Test messages from my 
> work e-mail address seem to go through though.
> 
> When you reply, please cc jtate at mi-corporation.com as I'm not sure I can 
> rely on my normal channels.
> 
> Joseph
> 
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