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<div class="moz-cite-prefix">On 2020-02-04 9:51 p.m., Adam Thompson
wrote:<br>
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<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
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<p>On 2020-02-04 21:04, Gerald Brandt wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left:
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course I've tried to get new IPs. I've had nothing but
resistance. I've made another attempt today, so now I wait for a
response.</blockquote>
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<p>Unfortunately, Hartmut is right in this regard. Trying will
not solve your problem, only succeeding will. Until you succeed
at that, I strongly recommend you route all outbound mail
through a proxy or relay server, because otherwise you will be
wasting your time.</p>
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<p>Which I am doing, over port 26 to my SMTP server in Montreal.<br>
</p>
<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
<p>The only option I know of is to reach Shaw's retention team;
just like cell carriers, the retention team is the only group
actually empowered to fix things for you. In this case, I
suggest you <em>*ahem*</em> relent if they send a business tech
out to your site, who demonstrates before leaving that you have
a static IP, DHCP is disabled, <span style="text-decoration:
underline;"><strong>reverse DNS is set (correctly)</strong></span>,
and you can once again send email.</p>
</blockquote>
I have no problem having a tech in here. When they lost my multihome
config, I had a tech on-site for 4.5 hours before it was resolved.
Reverse DNS is correct, DHCP is disabled... Shaw sees me pulling my
"static" IPs.<br>
<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
<p>MTS also has business service, and if sending email is your
main use case, their business DSL service is probably good
enough. So you call Shaw, tell them you're switching to MTS
because Shaw has consistently failed to address your problem.
And if they say "OK, have fun with MTS", switch. You literally
can't get any worse off than you are right now.</p>
<p>And if you have the same problem with MTS (which you almost
can't because YOU aren't in control of your IP address, they
are, ergo you can't really get it wrong) then... um... there's
only one common element remaining...</p>
<p>SMTP email pretty much requires a specialist nowadays. If you
haven't devoted, eh, let's say 10yrs (cumulatively, assuming
standard working hours) of your life to managing and running
public SMTP servers, I'd estimate >50% odds that the problem
somehow, somewhere, lies on your end. Maybe the proximate
problem is Shaw, but I've never had problems like you're
describing with getting their business service to do the right
thing.</p>
</blockquote>
<p>I've been running public facing SMTP servers for 15 years, at
least, using sendmail and now postfix. I'm no expert, but I'm not
a newbie. The only change on my end was moving from VOI to Shaw.
The fact that I can't telnet to any outside SMTP server removes
any mistakes I may have made on my end anyway, since it doesn't
involve the SMTP server.<br>
</p>
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<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
<p>If you continue to have problems, there's a small chance I
might be able get your complaint routed to someone capable
within Shaw; email me directly if you want to try that before
threatening to leave them.</p>
</blockquote>
Thank you for the offer! I may have to take you up on that.<br>
<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
<p>Also, maybe tell us what the router is, and what the SMTP
server is - I don't think we know those details yet. Although
ESR is a walking dumpster fire, this article of his remains
relevant (albeit tone-deaf) today: <a
href="http://www.catb.org/~esr/faqs/smart-questions.html"
moz-do-not-send="true">http://www.catb.org/~esr/faqs/smart-questions.html</a></p>
</blockquote>
I'm running postfix as the SMTP... it's part of my Univention Active
Directory Server. This email server has been running for two years,
with no changes. I run OPNSense as my firewall/router.
<blockquote type="cite"
cite="mid:708d1d415f8d1bb9d8b87ac0d19635b3@athompso.net">
<p>-Adam</p>
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