On 2022-08-31 10:04, Curtis Maurand wrote:
>
> I’ve been running my own MTA for 15+ years. occasionally I get
> bounced. recently was bounced by sbcglobal (AT&T) who doesn’t respond
> to removal requests. It’s definitely a PITA. However, in all
> fairness, I was sending to a large group (25 or so)and that might have
> done it.
>
> It’s imperative that you have rdns, spf, dkim and dmarc set up and
> that it all matches.
>
> My MTA will reject you if your ptr doesn’t match your a record and
> your helo/ehlo hostname. spf, skim and dmarc are all scored via
> spamassassin. Google rejects, outright, if there is any sort of
> mismatch in any of that at all. Setting up dnssec for your domain is
> also helpful.
>
> DNG list traffic comes through just fine.
>
> Cheers
> —Curtis
>

I have also run afoul of sbcglobal (AT&T) for no apparent reason
recently and also several other times over the years and yes, there
seems to be no recourse to resolve it. A bit heavy handed but not
unexpected from a corporate behemoth like ATT.

golinux