OT - "did not issue MAIL/EXPN/VRFY/ETRN"

Peter Farrow peter at farrows.org
Thu Jul 3 15:13:12 IST 2008

Dimitri Yioulos wrote:
> On Thursday 03 July 2008 8:35 am, Peter Farrow wrote:
>> Dimitri Yioulos wrote:
>>> Hi all.
>>> I hope it's OK to ask this here of you bright people, as come up with no
>>> answer despite a mythic search:
>>> I recntly got a smart phone, primarily so that I could manage my network
>>> in an emergency if away from the office and a computer.  (As an aside,
>>> using the mobile versions of OpenVPN, VNC, and Putty, among others, I'm
>>> able to do so quite nicely). As another peice, I'd like to connect to our
>>> Sendmail MTA (used in conjuction with MailScanner, MailWatch,
>>> Spamassassin, clamav, Synonym) for emailing purposes. I've tried a few
>>> different MUA's, and can receive mail, but am unable to send it.  The
>>> error at the seerver is:
>>> Jul  2 10:07:10 mail1 sendmail[26498]: m62E6fSg026498:
>>> 81.sub-75-221-91.myvzw.com [] did not issue
>>> MAIL/EXPN/VRFY/ETRN during connection to MTA
>>> I feel I should know how to configure my mail system to accept mail from
>>> this source, but I don't. Any help would be appreciated.
>>> Dimitri
>> When Sendmail reports this in the logs, it means that the sending agent
>> disconnected prematurely without sending any (valid) response to the
>> greeting.
>> You can replicate the error by telneting to port 25 on the sendmail
>> machine and then simply disconnecting before even beginning the smtp
>> communication.
>> P.
> Thanks, Peter.  Curious that no matter which MUA I use, I get the same 
> response. Any idea how I would overcome the issue?
> Dimitri
If you are using greetpause feature or have a reverse lookup for 
blacklists in your sendmail.mc it mail be causing a delay before your 
sendmail MTA issues its greeting, this delay may be too long for your 
MUA causing this to be logged as the MUA disconnects prior to the greeting.


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Peter Farrow
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