On 23/03/16 19:00, Miles Fidelman wrote: > I'm running postfix, amavis-d, and spamassassin in conjunction with a > list manager (sympa). I keep the detection threshold relatively high in > order to avoid false positives on business related mail (also handled on > the server) - but I'm wondering if there's an easy way to set a > different threshold for rejecting mail to lists. > > Can anybody suggest an easy place and mechanism for intercepting mail > destined for the server and rejecting based on the spamassassin score?
I see you had a reply on [email protected]. A lower rejection threshold probably is a common requirement if you have unmoderated lists and want to avoid spam ever getting through, or moderated ones where the moderators just get tired of moderating spam. IMHO the amavisd-new way of doing this is adding something to the config like: @spam_kill_level_maps = ( new_RE( [qr'-(?:l|list|subscribe|join|request)?\@'i => 3.0], [qr'\blists\.'i => 3.0], ), read_hash("/var/amavis/thresholds"), \$sa_kill_level_deflt); The last line includes the default 'kill' level that you have at the moment. The amavis new_RE() expression sets the kill level for local parts ending -l or using a 'lists' subdomain. With luck your recipient list addresses follow such a pattern. /var/amavis/thresholds is an alternative way of doing it, where that file is a table with individual email addresses or domains on the left-hand side, and the threshold score to trigger the final_spam_destiny on the right. The drawback of this is that it requires amavis configuration to be reloaded when the list of addresses changes. A third method, to try to avoid additional config files and not tested, might be to instead add \%sa_kill_level to the maps, and run something like: my %sa_kill_level; map { s/://; $sa_kill_level{lc($_)}=2.5 } ( keys %{read_hash('/home/sympa/etc/sympa_aliases')} ); But read_hash() probably does too much validation, and you need to write code to read and parse the file yourself. For more information, see https://www.ijs.si/software/amavisd/README.lookups.txt. HTH CK
