On 6/20/20 5:52 AM, Johannes Rohr wrote:
> Hi,
> 
> yesterday, I member tried multiple times to send a to a list, from a
> roundcube webmailer which is running on the same host as mailman itself.
> The message is in plain text without any attachments, no HTML either.
> Yet it was silently discarded by mailman. In /var/log/mailman/vette I
> find the message
> 
> Jun 19 21:02:42 2020 (14835) Message discarded, msgid: <************@***>'
>         list: ******,
>         handler: SpamDetect


There are 3 reasons why SpamDetect can discard a message.

1) (not likely) The message contains a header with value matching a
header/regexp combination in mm_cfg.KNOWN_SPAMMERS which is empty by
default.

2) The message is from a sender in a domain publishing a DMARC policy of
reject or possibly quarantine and the list's Privacy options... ->
Sender filters -> dmarc_moderation_action is Discard.

3) The message matched a Spam Filter Rule in Privacy options... -> Spam
filters -> header_filter_rules with a Discard Action.

Check these things in your list configuration.

-- 
Mark Sapiro <m...@msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan
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