If you can provide me details of the sending IP(s) I can take a look at
what might be causing some of the issues for some of the networks
(Spectrum) you're trying to reach.
On Mon, 13 Dec 2021 at 19:22, Chad Dailey via mailop
wrote:
> Hello--
>
> In the past month or so, a decade-old mailing list that I administer has
> been running into deliverability issues. I'm reaching out to mailop
> because I'm at wits' end for figuring this out. I'll outline what I
> believe to be useful background information below. Hopefully someone can
> offer suggestions for next steps, even better would be contact from admin
> peeps of the networks that are rejecting list messages, but I'll take what
> I can get. Please feel free to reach out on the list or PM me if you need
> additional information.
>
> Some details about the list: MPA is the name of the list, hosted at
> accelix.net, our longtime listserv provider. We're pretty low traffic, a
> few to dozens of messages a month, with 73 unique email addresses signed up
> to receive traffic. Membership has very low churn, most are very long term
> subscribers. The oldest subscriptions were added manually, but we've since
> moved to invite / COI for all new subscribers as of a few years ago. We
> perform an annual cull of recipient addresses that no longer wish to retain
> list membership, no response to the out of band message earns a drop from
> the list. In addition, the listserv will also disable subscriptions that
> encounter repeated bounces. Admittedly, bounce settings are pretty
> generous, but are configured that way due to subscriber ISP / mail
> providers that are less than reliable (welcome to the middle of nowhere).
> I've checked Spamhaus and a couple other public RBLs, and didn't find any
> negative reputation hits for the server. List info can be found here:
> http://mm.accelix.net/mailman/listinfo/mpa
>
> I thought maybe our website domain name change (it's in the message
> footer) was a factor, perhaps triggering a keyword string hit, but that
> four letter string was in the old domain name too. I hesitate to mention
> the string here for fear of getting snagged again and preventing this
> message from reaching the admins that I really need to see it. Hint: it's
> shorthand for the folks that engineer noisy, colorful aerial displays on
> holidays, especially on Independence Day here in the 'states.
>
> According to the bounce messages, Spectrum (subscriber emails on Charter
> and RoadRunner domains) says we've got an AUP violation (AUP#In-1190), but
> I can't find anything in their ToS / AUP that would get us booted,
> Windstream says we're spamming. Juno and Yahoo are apparently dropping
> messages silently, or their feedback isn't making it into bounce
> processing. Of course, none of them will talk to me because I'm not their
> actual customer, and 'Shave and a haircut' doesn't open any doors.
>
> I have encouraged our users to reach out to their providers, and write
> mail filters for the listserv if they are able, but I have low confidence
> in those functions. I'd rather fix the root of the problem instead.
>
> __
>
> Windstream reject messages:
>
>- The following addresses had permanent fatal errors -
>
> (reason: 554 5.7.1 [VI-1] Message blocked due to spam content in the
> message.)
>
>- Transcript of session follows -
> ... while talking to mx01.windstream.net.:
> >>> DATA
> <<< 554 5.7.1 [VI-1] Message blocked due to spam content in the message.
> 554 5.0.0 Service unavailable
>
> __
>
> Spectrum reject messages:
>
>- The following addresses had permanent fatal errors -
>
> (reason: 552 5.2.0 sender rejected. Please
> see https://www.spectrum
> .net/support/internet/understanding-email-error-codes for more
> information. AUP#In-1190)
>
>- Transcript of session follows -
> ... while talking to mx0.charter.net.:
> >>> DATA
> <<< 552 5.2.0 sender rejected. Please see
> https://www.spectrum.net/support/internet/understanding-email-error-codes
> for more information. AUP#In-1190
> 554 5.0.0 Service unavailable
>
> __
>
> Thank you for your attention,
> Chad Dailey
>
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>
--
James Hoddinott
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