Upstream connectivity providers that block port 25 often *cannot* open
it.
The law of the land (federal/national) in some jurisdictions, requires
subscribers to
send only over the ISP's facilities. One neck on the block when
tracking down abuse.
In such places, or in general, upgrading to a higher-grade 'business'
service,
one with fixed-IP, either from the same provider, or one that
contracts to work
over their 'wire', may be the easiest way to get an unblocked service.
In which case you no longer need their smarthost.
The fixed-IP covers the legal need to be able to track down abuse.
It is also a lot nicer to have for many reasons.
Expect to sign a higher-grade contract/ToS, to explain what you need
to do,
and pay more for the same bandwidth. (double or even triple)
Bright side is you usually get to talk to an upstream tech that knows
more than just:
"Close all your applications and reboot Windows". ;-)
Ours even configured his firewall with my ruleset for me, and NAT'ed
our old internal
LAN IP's so we didn't have so many boxen to reconfigure.... then saved
the config so he
was able to DLD it into a new interface when ours succumbed to HKG
summertime heat a year later.
YMMV...
Bill
Yeah, my on the net box is actually working pretty well for me through
liquid web, their support is great when I at least have a clue what to
ask, but in this case I was totally lost until recently, once you guys
hooked me up with the information they implemented it in seconds... it's
just the SBC DSL portion sucking it up getting out of my house to the
net... and right now we can't afford to upgrade that... hopefully by Q2
next year I can come back with all my problems related to that success :)
But now I have a feeling I'm close, I can telnet to port 587, just
haven't figured out how to get my local exim to try that port instead of
25... but... so... close... now :)
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