[115419] in North American Network Operators' Group
Re: Is your ISP blocking outgoing port 25?
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Fri Jun 19 04:38:34 2009
From: "Patrick W. Gilmore" <patrick@ianai.net>
To: North American Operators' Group <nanog@nanog.org>
In-Reply-To: <4A3B43E7.70101@easyhosting.nl>
Date: Fri, 19 Jun 2009 09:37:59 +0100
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Sent from my iPhone, please excuse any errors.
On Jun 19, 2009, at 8:53, Jeroen Wunnink <jeroen@easyhosting.nl> wrote:
> We just open port 2525 for customers from ISP's blocking official
> SMTP ports so they can use their dedicated servers/domain mailservers.
Is there any reason you do not use port 587, SUBMIT?
-- TTFN,
patrick
> Lyndon Nerenberg wrote:
>> On Thu, 2009-06-18 at 16:14 -0400, Joe Provo wrote:
>>
>>> then you should be shifting your userbase to authenticated on the
>>> SUBMIT port [587] anyway...
>>>
>>
>> Except for those ISPs who choose to intercept port 587 as well.
>> This is
>> a big problem with Rogers in Vancouver. They hijack port 587
>> connections
>> through some sort of lame proxy that connects you to your intended
>> host,
>> but strips the AUTH field out of the EHLO response from the remote
>> submission server ...
>>
>>
>>
>
> --
>
> Met vriendelijke groet,
>
> Jeroen Wunnink,
> EasyHosting B.V. Systeembeheerder
> systeembeheer@easyhosting.nl
>
> telefoon:+31 (035) 6285455 Postbus 48
> fax: +31 (035) 6838242 3755 ZG Eemnes
>
> http://www.easyhosting.nl
> http://www.easycolocate.nl
>
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>
