Tuesday, March 7, 2017, 11:43:34 PM, you wrote:

>> I am surprised port 25 for SMTP works. That is
>> blocked by many ISPs.

> I have been hearing that for years but never encountered it myself.

It  gets  particularly  irritating  when you use the SMTP£ server from
your own domain, but your actual Internet connection is not your fixed
line DSL at home. In those cases (e.g. hotel wifi, SIM card in a 3G/4G
router), if you can find what the SMTP server
is,  then  port 25 works, but some don't seem to have one. A VPN fixes
the  problem.  Otherwise,  you  have  to ask your hosting provider for
alternatives to port 25.


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