[svlug] ISP blocks port 25

Skip Evans skip at bigskypenguin.com
Mon Apr 16 10:48:58 PDT 2007


Brian J. Tarricone wrote:
> On Mon, 16 Apr 2007 10:59:46 -0600 Skip Evans wrote:
> 
>> Hey all,
>>
>> I just switched my home ISP from Qwest to Bresnan 
>> on a cable modem, and also discovered they block 
>> port 25 on their home accounts so I am unable to 
>> connect to my SMTP server here in the office on 
>> port 25 to receive mail.
> 
> Receive mail?  Perhaps you mean send?

Oops, yes. I meant send mail.

Thanks,
Skip

> 
>> What is the most common workaround for this? Do I 
>> just move the mail server to a different port?
> 
> I'd suggest running it on the 'submission' port (587) in addition to
> port 25.  Seems like most ISPs in my experience (admittedly few) don't
> block 587.  If you're using postfix, it's as easy as uncommenting one
> line in /etc/postfix/master.cf and restarting the daemon.
> 
> 	-brian
> 
> 
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-- 
Skip Evans
Big Sky Penguin, LLC
61 W Broadway
Butte, Montana 59701
406-782-2240
http://bigskypenguin.com
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