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List:       postfix-users
Subject:    Re: Google rejecting IPv6 mails
From:       Alexander Wasmuth <alex () wasmuth ! org>
Date:       2013-10-10 17:21:34
Message-ID: CDFE4135-AAE5-4CD3-89E6-C9D6C42BD4A4 () wasmuth ! org
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On 10.10.2013, at 14:55, Andreas Herrmann <sma@physik.tu-berlin.de> wrote:

> <***@gmail.com>: host gmail-smtp-in.l.google.com[2a00:1450:4001:c02::1a]
> said: 550-5.7.1 [2a01:4f8:d16:4114:feed:1bad:beef:dead       1] Our
> system
> has 550-5.7.1 detected an unusual rate of unsolicited mail
> originating from
> your IP 550-5.7.1 address [...]
> 
> Just an idea:
> Google is blocking the complete 2a01:4f8::/32AS24940
> (HETZNER-RZ-NBG-IPV6-BLK1) and doesn't care abut seperate subnets like
> Luigi's 2a01:4f8:d16:2409::/64 or my 2a01:4f8:d16:4114::/64 :-(

I am not so sure if this is the reason, I have (and had) no problems sending to \
google and I am in the same network range (Hetzner):

Oct 10 19:12:46 tldr postfix/smtp[1791]: 5E0AAF0246: to=<xxx>, \
relay=aspmx.l.google.com [2a00:1450:4001:c02::1b]:25, delay=2.3, \
delays=0.18/0.01/0.38/1.8, dsn=2.0.0, status=sent (250 2.0.0  OK 1381425166 \
x49si37444641een.324 - gsmtp)

-Alex=


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