Does anyone have any insight into how we get onto (or off) a Microsoft
block list?
I started seeing these bounces around midnight on Tuesday:
"550 5.7.1 Unfortunately, messages from [204.80.232.21] weren't sent.
Please contact your Internet service provider since part of their
network is on our block list (S3150). You can also refer your provider
to http://mail.live.com/mail/troubleshooting.aspx#errors. "
We don't have any current issues, but on Monday morning we did have a
compromised customer account send 200 spam emails. 200 triggered a limit
and they couldn't send any more. Later in the morning we disabled the
compromised account. This would have been about 18 hours before we
started seeing the bounces shown above. I'm assuming this is related,
but I don't know how I could have addressed the issue any faster, and I
don't know why there would be such a delayed reaction from Microsoft's
system.
Does anyone know anything of interest about this?
-- Adam Moffett, Network Engineer
Plexicomm - Internet Solutions | www.plexicomm.net
Office: 1.866.759.4678 x104
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