[Mailman-Users] Mailman Hosting

[Jim Popovitch]

On Wed, Dec 21, 2016 at 11:42 PM, Mark Dale <mark at mailmanlists.net> wrote:
> Hi Odhiambo and Steve,
>
> I'm one of the co-owners of MailmanLists.net that is mentioned in this post.
>
> As Odhiambo said, we've recently moved one of the servers that hosted
> Odhiambo's list. This involved a change of IP address, and at the same time
> the problem with Verizon kicked into play.
>
> All the DNS records (inc SPF, DKIM) are in place, the server is on no RBLs,
> con-current connections to the recieving mail servers is set at 2 in
> Postfix. In short, all the right boxes are ticked as far as we can see.
>
> Point noted about the time needed to build a good IP reputation. In light of
> that, we moved the list to our old established server in Europe. It has a
> SenderScore of 99, and of course all the same boxes are ticked. Verizon
> still rejected list mail.
>
> As they have been somewhat resistant to address the issue in any real way, I
> do agree with Steven that they may listen to loud complaints from their own
> customers. However, that doesn't help Odhiambo right now.
>
> We haven't brushed Odhiambo off, but rather have worked with him on this
> problem trying to fix it. However, right now all our best intents are not
> helping - so any suggestions for a workaround on this would be truly
> appreciated.
>

A good place to start is on the mailop list, explain your company and
sign-up practices/filtering, etc.  Be open and ask for specific reps
to contact you offline if necessary.  You may get some awesome help,
although this close to the holidays your message may not hit the right
people until next year.

https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop

-Jim P.