[SA-exim] Cannot send message to self using external smtp server

[Chris Purves]

Sander Smeenk wrote:
> Quoting Marc MERLIN (marc at merlins.org):
> 
>>> <chris at northfolk.ca>: host mail.northfolk.ca[220.234.29.148] said: 500 error
>>>     (in reply to MAIL FROM command)
>> this reject is not from SA-Exim, it's from Exim itself. You should debug
>> your Exim config for that (and try exim-users if you need further help)
> 
> Even so it is weird that disabling sa-exim makes the message go through ;)
> 
It seemed that it was a coincidence that it worked one time when 
disabling sa-exim.  Later attempts didn't get the same results.  In the 
end I was able to determine that it was not my machine that was sending 
the 500 error.  The messages were being rejected somewhere in the 
middle.  Either my ISP or government firewalls (I live in Shanghai) 
think I shouldn't be able to receive mail from myself.  You can imagine 
my relief when I realised it was not a technical problem.  ;-)

-- 
Good day, eh.
Chris