On Sun, 9 Jul 2017, Mark Raynsford wrote:
Unfortunately Google has stopped accepting mail from my server via IPv6
and I haven't been able to figure out why or resolve the problem.
Hello.
Are you by any chance seeing this message?
Jul 9 08:43:06 mail postfix/smtp[18059]: C95E4849A: to=*,
relay=gmail-smtp-in.l.google.com[2607:f8b0:400d:c0b::1b]:25, delay=1.3,
delays=0.29/0.04/0.53/0.46, dsn=5.7.1, status=bounced (host
gmail-smtp-in.l.google.com[2607:f8b0:400d:c0b::1b] said: 550-5.7.1
[2001:19f0:5:752:f000:: 1] Our system has detected an unusual 550-5.7.1
rate of unsolicited mail originating from your IP address. To protect 550-5.7.1
our users from spam, mail sent from your IP address has been blocked. 550-5.7.1
Please visit 550-5.7.1 https://support.google.com/mail/?p=UnsolicitedIPError
to review our 550 5.7.1 Bulk Email Senders Guidelines. j64si7748761qte.160 -
gsmtp (in reply to end of DATA command))
If so... You might want to try going through the sender guidelines page.
I'm running a clean MTA on a fresh IPv6 address, with correct reverse DNS,
correct SPF, etc, etc. I've never sent or relayed unsolicited mail in my life.
There's a form you can fill out at the end to dispute the mail blocking
once you've ensured you follow all of the guidelines. I filled in the
form this morning, and am waiting for a response.
I think you're just falling foul of a ridiculously and unreasonably
heavy-handed anti-spam process.
No, I'm seeing this message:
Jul 7 23:10:57 bear postfix/smtp[29598]: 92F8422A0C90: to=<a...@xyz.com>,
relay=aspmx.l.google.com[2607:f8b0:400d:c0b::1a]:25, delay=0.65,
delays=0.13/0/0.29/0.22, dsn=5.7.1, status=bounced (host
aspmx.l.google.com[2607:f8b0:400d:c0b::1a] said: 550-5.7.1
[2607:f308:1:1::2 12] Our system has detected that this message
550-5.7.1 is likely unsolicited mail. To reduce the amount of spam sent to
550-5.7.1 Gmail, this message has been blocked. Please visit 550-5.7.1
https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1 for
more information. o74si4960796qkl.67 - gsmtp (in reply to end of DATA
command))
I would agree with you that I'm running into an unreasonable and
untransparent anti-spam process. I'm just looking for ways to work around
it.
I've got FCrDNS, SPF, DKIM, all configured correctly and verified by
multiple test sites.
Admittedly, one of my user's accounts was hacked and was being used for a
brief period of time to send spam. However, this was stopped on 19 June,
and here we are several weeks later still running into this problem.
I'm sure there are dozens of gmail accounts being used to send spam at any
given time, but you don't see everyone else refusing to receive mail from
gmail!
Scott
