[CentOS] sendmail sending out on port 587

[Les Mikesell]

Gregory P. Ennis wrote:
> 
> On Mon, 2010-03-22 at 09:21 +1100, Jobst Schmalenbach wrote:
>> Install dovecot on the server.
>> Use firewall rules to block out all networks for 993 BUT
>> the network of your laptop (whatever ISP your on).
>> Use thunderbird (or whatever) to read you email.
>>
>> I do that with all our mobiles/laptops.
>>
>>
>> Jobst
>>
>>
> Jobst,
> 
> I had been doing what you suggested above.  This resulted in being able
> to read all e-mail, but I could not send any e-mail in that port 25 was
> being blocked by the hotel.

The other common option is to use port 465 for smtp over ssl - which should be 
something you can activate by uncommenting lines in your sendmail.mc and most 
clients handle.  Or use an outside account like gmail or yahoo that does this. 
You still need to configure client authentication, and on your own server, relay 
only if authenticated.

-- 
   Les Mikesell
    lesmikesell at gmail.com