Usually they block port 25 but allow port 587. But a mail server
won't send email to another mail server on port 587.
You've also got the problem with mail servers that require auth
before smtp. That is, you must authorize via POP3 before you can
send any email outbound.
Ack, at 3/20/07, John Stiles said:
One minor comment: due to problems with Windows viruses, spam and/
or open relays, many ISPs (such as mine) do not allow users to run
SMTP servers on their machine, blocking the ports involved, and
explicitly deny connections to any SMTP server but their own. I
wouldn't recommend trying to send mail by running the entire SMTP
process yourself.
--
Sincerely,
Rosyna Keller
Technical Support/Carbon troll/Always needs a hug
Unsanity: Unsane Tools for Insanely Great People
It's either this, or imagining Phil Schiller in a thong.
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