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[cobalt-users] SPAM relay bouncing causing mailserver on our network to retry constantly
- Subject: [cobalt-users] SPAM relay bouncing causing mailserver on our network to retry constantly
- From: Greg Hewitt-Long <cobaltusers@xxxxxxxxxxxxxxxxxxx>
- Date: Tue Nov 11 08:03:01 2003
- List-id: Mailing list for users to share thoughts on Sun Cobalt products. <cobalt-users.list.cobalt.com>
Many of our clients forward mail off their domain accounts on our servers for collection on their ISP accounts, we're seeing a large number of ISPs begin to "bounce" SPAM back to us. This causes our mailservers to attempt to return the mail to the "original sending" - which is in about 99.999999% bogus.
Can anyone shed some light on how to prevent our mailservers from trying to deliver this junk for 5 days?
One example email I got back from an ISP playing netcop contains the following so we can identify them:
reason: 552 5.0.0 UCE not accepted.In case of error contact the postmaster@xxxxxxxxxxxxxxxx
I am just fed up going through my postmaster messages for these SPAMs and deleting them - I'd like to configure sendmail to look for headers and NOT ATTEMPT to relay the back to the original sender.
tia
Greg Hewitt-Long
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