And now, during the past few days, zen has blocked a couple of valid
emails, the IPs of which zen claims to know nothing about.
Last week zen.spamhaus blocked over 280 emails; I've going to miss it.
I have now removed spamhaus from postfix entirely and hope that
spamassassin will catch any nasties. It will be interesting to see if
any valid emails get trapped by SA.
For reference, a couple of samples of the blocked emails are:
NOQUEUE: reject: RCPT from o4.email.wetransfer.com[192.254.123.89]: 554
5.7.1 Service unavailable; Client host [192.254.123.89] blocked using
zen.spamhaus.org;
from=<bounces+922094-4e0b-(redacted)@em9713.email.wetransfer.com>
to=<(redacted)> proto=ESMTP helo=<o4.email.wetransfer.com>
NOQUEUE: reject: RCPT from xmailer.gwdg.de[134.76.10.29]: 554 5.7.1
Service unavailable; Client host [134.76.10.29] blocked using
zen.spamhaus.org; from=<(redacted)@mpimet.mpg.de> to=<(redacted)>
proto=ESMTP helo=<xmailer.gwdg.de>
