James E. Morrow wrote:
Allow me to jump in here. I'm a Cox HSI customer so I have some
familiarity with port 25 blocking. You may wish to ask your nonISP email
providers what SMTP port to use. This will generally be port 587. If SSL
is used then use port 465. Your email provider (not your ISP) will be
able to tell you what ports and with what settings their server is
listening.
If you are away from home and can't log on to your ISP then you can't
send over their network. Use their web-mail.
When I send emails here at home Cox's MX mail transit servers are the
only Cox servers touching my email, not their SMTP or POP servers.
It has been a couple of decades since I was a systems manager and
I have probably forgotten more about networking than I ever knew! :-(
Can you clarify the hierarchy of the Internet access process?
Where are the Ports and other security-related settings and other
addresses controlled?
e.g. Is Port 25 or 26 or 465 or 587 *always* controlled only by
whatever server controls the In and Out E-mail and Web access
(incl. FTP and VNC)? Or does the ISP (the one I use from Home
or the Wifi at the coffee shop or library or hotel or airport)
have to allow access to those ports?
HOME
-----
My ISP
My ISP-hosted E-mail In & Out & Web
E-mail In & Out *not* hosted by my ISP
AWAY FROM HOME WIFI
--------------------------------------
The Host Wifi (e.g. a coffeehouse)
My ISP-hosted E-mail In & Out
E-mail In & Out *not* hosted by my ISP
--
Thanks! & 73, doc, KD4E
Defend free speech or lose your freedom.
I don't google I SEARCH! http://ixquick.com
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Have an http://ultrafidian.com day!
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