Gerald, the replies you've received here on MUUG pretty well converged onto a consensus, and it looks like you haven't carried out the main suggestion yet - IP address(es) unequivocally in the "business" category.  E.g., here's my own (second) reply a while ago:
 
> Hi Gerald.  You really still need to press hard to talk to a biz techie at Shaw who understands this stuff.
> And then, notwithstanding the possibility that your particular 24's are from their DHCP pool, you should
> press hard to have them give you 183's, 184's, or such, which are unequivocally in their "business customers"
> pool.  Otherwise, there's probably more trouble in the future with something at their end considering you
> as "residential" again.
 
Hartmut W Sager - Tel +1-204-339-8331


On Tue, 4 Feb 2020 at 20:28, Gerald Brandt <gbr@majentis.com> wrote:
So, port 25 opened for a few days. Shut down again today with no reason why.

Talked to business support, and they suggested that perhaps someone
discontinued receiving our newsletter.

What the hell that has to do with SMTP out not connecting to any
servers, I have no idea. That as stupid as saying since gmail can send
to gmail, port 25 is open.

Gerald


On 2020-01-21 12:25 p.m., Gerald Brandt wrote:
> Hi,
>
> I've been fighting with Shaw for days on this. I have what they call a
> business account with 8 static IPs.
>
> I can telnet mail.shaw.ca 25 and get a connection. So, inside their
> network, SMTP works.
>
> If I try to telnet to any other server on port 25, i get no
> connection. e.g. telnet to google email servers fails, telnet to my
> server in Montreal fails.).
>
> To test that port 25 was open, they had me start Firefox, login to
> gmail, and send an email from my gmail to my gmail account. that was
> proof they weren't blocking port 25... Yeah.
>
> Right now, in order to get email out, i am using mail.shaw.ca as a
> relay. That is not supported, so they are asking me to not do that. I
> told them if I don't use them as a replay, i can't get email out. They
> did not understand.
>
> Does anyone have any idea how to get these guys to understand what is
> going on? Am i using the wrong terminology? I can't see how I can make
> it any clearer to them that they are blocking port 25 access to any
> system outside of their network.
>
>
> Gerald
>
>
>
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