what if I am a hosting company and have a customer who has 100 users with Outlook Express behind a firewall. They compose and send messages using Outlook Express, and Outlook Express gives it to my mail server.And all 100 users and their 100 msgs are sent to your mail server at the same minute to the same @recipient.domain and therefore to the same MX host?
Then that MX host should block your mail server's ip, since the MX is being attacked by your "users". :))
You think I'm cheating by over-qualifying with "one minute" ? Make it 5 minutes, make it an hour, make a day, our blacklist isn't picky, come one, come all. Statistically, it just doesn't happen.
Here, try this:
grab this tools pkg http://unxutils.sourceforge.net, uncomporess and copy the .exe's I use below to your system32 dir to get them on the default path
do a .bat that contains this line:
gawk "/SMTPD.* connect/ {print $6}" < /path/to/spool/sys0122.txt | sort | uniq -ic | sort /r
and paste your results in here.
hey, EVERYBODY can play!!
:))
Len
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