Seems some people are having issues posting to the list lately. Their mail is
being rejected. For those who didn't bother to read the reject, or cant make
sense of what it is saying, read on.. everyone else, feel free to delete this
message.
linux.nf and hunley.homeip.net both use http://or.orbl.org as a DNS
blacklisting site for incoming mail. I hate to use this feature cause I do
realize that it is not 100%, however the amount of spam that hits the domains
on my machines necessitate it.
here's how it works. A user on 65.24.128.219 sends mail to linux.nf. the
sendmail daemon on linux.nf sees the mail coming from this machine, initiates
a dns lookup to 219.128.24.65.or.orbl.org. That lookup either indicates that
65.24.128.219 is listed as on open mail relay or is not. If it is listed, the
sendmail daemon issues a 550 error stating that email from 65.24.128.219 is
blocked and dumps the incoming mail into /dev/null. If it is not lsted, then
the mail is accepted and everyone is happy.
If you find that you are getting these rejection messages, READ the message.
Write down what machine was rejected and contact your admin. Tell them that
the machine in question is listed as an open relay and they need to go to
http://or.orbl.org and follow the directions therein to have their site
removed from the blacklist. If they refuse, I suggest you find another
provider... there is really no excuse for running open relays.
Thanks and sorry about the inconvenience and hassle; however, I do feel it is
worth it.
--
Douglas J. Hunley ([EMAIL PROTECTED]) - Linux User #174778
Admin: http://hunley.homeip.net/ Admin: http://linux.nf/
Brainbench Linux Administration Certified
~~ Now offering Linux admin services for the home user ~~
Calvin : I think we have got enough information now, don't you?
Hobbes : All we have is one "fact" that you made up.
Calvin : That's plenty. By the time we add an introduction, a few
illustrations and a conclusion, it'll look like a graduate thesis.
_______________________________________________
http://linux.nf -- [EMAIL PROTECTED]
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