[svlug] ISP blocks port 25
skip at bigskypenguin.com
Mon Apr 16 13:27:46 PDT 2007
I have OpenVPN on the server already, and I
connect to it via 10.8.0.1 so I'll give that a try
tonight and let the list know how it goes.
David Rosenstrauch wrote:
> 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.
>> What is the most common workaround for this? Do I
>> just move the mail server to a different port?
> Do they block the OpenVPN port? (UDP 1194) If not, then you can do
> what I do:
> Set up the OpenVPN daemon on your box. Then you can OpenVPN in to your
> box, which will then let you access port 25 on the box via the openVPN
> I.e., I OpenVPN in to my server, which sets up my work machine with an
> additional interface (tun0) with an IP address on the VPN (10.1.0.2). I
> can then set my email client to connect to port 25 on the server
> (10.1.0.1) to send its outgoing mails.
> One other thing that I do here that you may want to consider is to then
> have your SMTP server relay the outgoing mails through your ISP's SMTP
> server. Many mail servers block incoming emails that come from an IP
> address that they know is marked as being within some ISP's dynamic IP
> range. Relaying the emails through your ISP's server solves that problem.
> svlug mailing list
> svlug at lists.svlug.org
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