[SAC] [OSGeo] #1778: Spam to mailing list -owner addresses

#1778: Spam to mailing list -owner addresses
Reporter: jsanz | Owner: sac@…
     Type: task | Status: new
Priority: normal | Milestone:
Component: Systems Admin | Resolution:
Keywords: mailman, spam |

Comment (by Jeff McKenna):

I've examined the logs closely and spent my whole day on this. (funding,

The original issue reported in this ticket (spam from qq.com domain) still

* Typical log message today showing successful emails sent to our list

Jun 18 11:08:51 osgeo6 postfix/qmgr[23549]: 173A7600C6B7:
from=<123725849@qq.com>, size=956, nrcpt=1 (queue active)
Jun 18 11:08:51 osgeo6 postfix/pipe[24762]: 173A7600C6B7: to=<mapguide-
internals-owner@lists.osgeo.org>, relay=mailman, delay=0.69,
delays=0.54/0/0/0.15, dsn=2.0.0, status=sent (delivered via mailman

* So I examined our postfix config files.
* /etc/postfix/access contains: qq.com REJECT
* so something wasn't right, because the qq.com domain is not being
* I noticed that the config file /etc/postfix/main.cf was missing the
important line:
smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/access
* restarted service
* logs say that qq.com now REJECTS the qq.com domain:
Jun 18 11:35:04 osgeo6 postfix/smtpd[17873]: NOQUEUE: reject: RCPT from
unknown[]: 554 5.7.1 <676479210@qq.com>: Sender address
rejected: Access denied; from=<676479210@qq.com> to=<discuss-
bounces@lists.osgeo.org> proto=SMTP helo=<mail.tofine.com>
* but that slows the queue as postfix tries to send a rejection email to a
broken qq.com sender. So updated the access file to DISCARD instead, when
allows postfix to crunch faster:
Jun 18 11:40:23 osgeo6 postfix/smtpd[20305]: NOQUEUE: discard: RCPT from
unknown[]: <491235343@qq.com>: Sender address triggers
DISCARD action; from=<491235343@qq.com> to=<gdal-dev-
owner@lists.osgeo.org> proto=SMTP helo=<chinarida.com.cn>

I am watching the logs being processed now. I hope this change helps!!!

Ticket URL: <https://trac.osgeo.org/osgeo/ticket/1778#comment:7&gt;
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