Re: [cobalt-users] Re: How to stop SPAM senders?

[Jeff Lasman <jblists@xxxxxxxxxxxxx>]

wcstaff wrote:

> They feel it is a lot more professional to
> send from businessname.com instead of aol, yahoo, mindspring, etc.

Most ISPs allow you to send email from you@xxxxxxxxxxx (where
example.com is your domain name).  They simply want it sent through
their own server.

When I was in the ISP business that's how we did it, and for very good
reason: since we'd be held responsible if someone from our dialup-IP#
pool spammed, we wanted the emails in our logs so we could track it if
necessary.

Actually, when an AOL user sets up a "real" MUA (Outlook Express, for
example) and puts your mail.server name into it's outgoing email server
field, the email will go out through AOL's mailservers anyway, they
reroute all outgoing data on port 25 to their own mail servers.  Other
ISPs do it as well.

Verizon used to block email from you@xxxxxxxxxxx, and a few other ISPs
have done it as well, but most of those also block port 25 mail as well,
so if your client is with one of them, he should change to another ISP. 
Of course telling him that isn't always a viable solution for you.

Jeff
-- 
Jeff Lasman, nobaloney.net, P. O. Box 52672, Riverside, CA  92517 US
Internet & Unix/Linux/Sun/Cobalt Consulting +1 909 778-9980
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