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Re: SMTP Connections

On Thu, 3 May 2001, MaD dUCK wrote:
> are you behind a firewall?

Yes, but I don't think it blocks outgoing 25/tcp connects.

> try to telnet to port 25 of mail.madduck.net - if you get a refusal,
> then you have a problem on your side and i think you might have a
> firewall that blocks outgoing 25 connects (which is not uncommon).

Connected to mail.madduck.net.
Escape character is '^]'.
220 diamond.madduck.net ESMTP
MAIL FROM:<alice@wonderland.com>
250 Ok

> > On what basis could a mail server decide which hosts it is going to allow
> > to connect to it?
> ip addresses mostly...

Could you expand on this?  How would a mail server decide which IP
addresses to block?  Why would it suddenly decide that it doesn't like
mine?  :)

David Steinberg

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