Centuries ago, Nostradamus predicted that Polarian would write on Sun Jul 23 21:44:34 2023:
>
> I believe I have discussed this before, but when I email any openbsd
> mailing list (or email address) I get the "451 Temporary failure,
> please try again later."
>
> My email server passes SPF DKIM and DMARC, has reverse DNS and the
> IP address and domain is not listed on any blocklists, it is also
> statically allocated, as dynamic addresses are automatically spammed
> (or rejected) due to the nature of them changing.
>
> Although my emails eventually go through after about 20-40 minutes
> of waiting, it is still incredibly annoying about the length of time
> I have to wait for them to be delivered. I have heard this error is
> due to spamd where it temporary throttles your email to prevent spam
> and for "security purposes", but people who use gmail and outlook do
> not seem t[o] have the same issues, so is it simply that my mail
> server is self hosted, and therefore not trusted?
>
Greylisting is common, even when the SMTP client passes SPF DKIM and
DMARC, has reverse DNS and the IP address and domain is not listed on
any blocklists, and it is also statically allocated. If I recall
correctly, ASSP does greylisting by default even when all of those
criteria are met.
Are you sure that users of gmail and outlook don't have the same
problem? If you're sure that they don't, it is most likely because
the SMTP server at mail.openbsd.org has put them in its whitelist.
And not you.
You didn't even mention the worst of it. The first few times you
connect to mail.openbsd.org, the system administrator insults you.
Here is a verbatim quote from an early SMTP session between my
computer and mail.openbsd.org:
220 mail.openbsd.org ESMTP mail.openbsd.org; Wed Jul 12 12:55:35 2023
HELO m5.chicago.il.us
250 Hello, spam sender. Pleased to be wasting your time.
MAIL FROM:<jay@m5.chicago.il.us>
250 You are about to try to deliver spam. Your time will be spent, for nothing.
RCPT TO:<majordomo@openbsd.org>
250 This is hurting you more than it is hurting me.
DATA
451 Temporary failure, please try again later.
I almost didn't join this mailing list when I saw that. But then I
thought -- Why should I deprive myself of this mailing list, because
the system administrator of mail.openbsd.org is an a.....e? If I do
that, then the a.....e wins. I can just ignore the a.....e, and
exchange e-mails with the other members of the mailing list.
>
> Thank you,
> --
> Polarian
> GPG signature: 0770E5312238C760
> Website: https://polarian.dev
> JID/XMPP: polarian@polarian.dev
>
Jay F. Shachter
6424 North Whipple Street
Chicago IL 60645-4111
(1-773)7613784 landline
(1-410)9964737 GoogleVoice
jay@m5.chicago.il.us
http://m5.chicago.il.us
"When a man is tired of putting made-up
quotations in the mouths of famous dead
authors, he is tired of life."
-- Samuel Johnson
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