------------ Original Message ------------
> Date: Monday, April 13, 2015 14:29:42 -0700
> From: [email protected]
>
> Failed to send some messages. Erno exception: isConnected failed;
> ehost
> 
> For example. 
> 
> The smtp settings work fine on some wifi networks, not on others. 
> 
> Any ideas why? 
> 
> Thanks in advance. 
> B

As discussed last week, some networks may only have limited ports
(e.g., those related to http) open. You're especially likely to
encounter this if you're trying to send using port 25, rather than
465 or 587.

It is also possible that the outgoing mail server is restricting
connections from certain (common spam-source) networks or ipnumbers
that don't have rDNS records. 

   - Richard


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