Hi Nicole
I wonder if you can help me. I saw your message on the Net regarding ISPs Blocking SMTP connections from dynamic IP address space. I have a problem now that didn't exist 6 months where my mail gets returned when emailing a specific address, the error is ....550: SPAMMER and all my ISP will say it's the remote end that's blocking. Is this what your talking about, and if yes how can I check who's doing what?
Thanks Lenny
Hello Lenny!
Many mail servers are configured filtering mailers with IP addresses listed in
some DNS based blacklists. Course many spammers doing their black
works on dinamic IP spools (listed in DSBL I think), many of mailservices
using this blacklist. Try to findout your IP there:
http://www.declude.com/JunkMail/Support/ip4r.htm
There you can read about antispam technology.
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