[Gllug] Guarddog firewall question

[Casper Gasper]

>    SMTP delivery requires the destination to be open to receive mail as it
> appears, which is generally not the case because only a relatively small
> number of end users run their equipment 24/7. This means several retries,
> and repeated server effort, to deliver the average email. Also junk mail and
> other nasties are easily posted to an open port 25, so many ISPs allow their
> customers to access their mail via something like POP3 but block SMTP port
> 25 delivery. SMTP mail from their customers is not affected, the ISP does
> aim to run 24/7 but not continually poll their customers via POP3.

  But the OP is not running a mail server, he's not accepting smtp
mail delivery, just sending emails to his ISP's mail server, which
happens to be running on tcp/2525.  In which case:
 (a) he needs no entry to his INPUT chain, other than the standard one
of accepting all ESTABLISHED traffic.

 (b) He needs to open up tc/2525 on his OUTPUT chain for NEW connections.

Casper.
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