[Cialug] Qwest subtly filtering port 25

David Champion dchamp1337 at gmail.com
Fri May 27 16:27:37 CDT 2011


Or 587. Sorry... typo.

-dc

On Fri, May 27, 2011 at 4:27 PM, David Champion <dchamp1337 at gmail.com>wrote:

> Use port 487, which is for SMTP Submission.
>
> -dc
>
>
> On Fri, May 27, 2011 at 4:18 PM, Tim Perdue <cialug at perdue.net> wrote:
>
>> Not sure if anyone else ran into this, but it had me vexed all week. I
>> have used thunderbird for years from home to relay off an outside server and
>> it just quit working and starting giving an error about SMTP timeout.
>>
>> Turns out Qwest has done some sort of subtle blocking of port 25 that
>> causes SMTP to timeout, although the port appears to be open (you can telnet
>> to it).
>>
>> http://mikedopp.com/2011/bold-move-from-qwest-to-block-port-25-traffic/
>>
>> A call to tech support got them to drop the filtering within a few minutes
>> and my email works again.
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> http://cialug.org/mailman/listinfo/cialug
>>
>
>
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