IIS and SMTP - Keep seeing weird log entries

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Author Keep seeing weird log entries
Robert Dufour

2006-11-05, 1:15 pm

I have a Windows XP pro SP 2 set up as an SMTP server. I need it for some
applications that I am developping in Visual basic .net 2005 to send out
e-mails automatically to my tech support.
I enabled logging on that machine for the SMTP default virtual server and I
keep seeing the following bunch of log entries that don't make sense to me.
They just keep repeating.

16:37:33 bay0-mc4-f11.bay0.hotmail.com EHLO - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com - - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com MAIL - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com - - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com RCPT - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com - - 0
16:37:33 bay0-mc4-f11.bay0.hotmail.com BDAT - 0
16:38:30 - - - 0

Does anyone know why this would be happening? Is this normal or not?
For your info I am on a small lan behind an ISA 2004 firewall.
My email is hosted outside my lan and I normally access it with Outlook 2003
OK.
I don't think anybody could come in and try to use the local virtual server.
Even I can't use it to send my auto email messages, it thinks I'm tring to
relay and won't let me. so where do these log entries come from?

Thanks for any help.
Bob




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