[Mimedefang] mail server not issueing helo ro similar

[EKB]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


I see about 50 / hour just like this:

"............did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA"

This is across multiple mail servers and the messages originate from all
over the network.

If it is something to do with my network / sendmail configuration, I would
like to know what it is also.

- -- 
EKB

My spelling sometimes fails to conform to published standards.

On Tue, 20 Jan 2004 at 09:23 -0500, WBrown at e1b.org at WBrown at e1b.org said:

> mimedefang-bounces at lists.roaringpenguin.com wrote on 01/18/2004 02:59:33 
> PM:
> 
> > How common is it for MTA's to not send a:
> > helo or etrn commnad?
> 
> Not very common for MTA.  This likely somtone/thing probing your network.
> > 
> > I see this in my logs:
> > did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
> > 
> > Assuming you are using sendmail, will it even accept the mail if a valid
> > helo or ehlo command is not received?
> 
> Nope.  try telnetting to your server on port 25. and issuing a mail from 
> command.  It should complain that it  did not receive a HELO or EHLO 
> first.
> 
> > What MTA server would be doing this?
> 
> None.
> > 
> > Can you reject on this?
> 
> What's to reject?
> _______________________________________________
> Visit http://www.mimedefang.org and http://www.canit.ca
> MIMEDefang mailing list
> MIMEDefang at lists.roaringpenguin.com
> http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
> 
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQFADUCAdY33sSC+/BERAnzYAJ9DFzrBlEvmpfdHeNIGMM3PCQTgUACfeji2
m65gm++5+/Hn8Nr2rHp+HHk=
=H5I2
-----END PGP SIGNATURE-----