Jiří Veselský napsal(a):
premejslim o necem podobnym
postu mam jak ty (postfix, virtualni uzivatele a spamassassin), ale me
by stacilo ty spamy presmerovat na uzivatele "spam". Moje idea byla
zatim takova, ze pomoci header_checks mapy bych nedefinoval
/^Subject: .*SPAM* /
REDIRECT [email protected]
zatim jsem to teda nezkousel, je to jen takova idea jeste nedotazena
do konce. Nejsem si ani jistej, jestli ten header_checks je aplikovan
jen na prvne prichozi maily, nebo i na maily vracene spamassassinem
s tim by mi moh nekdo poradit
No jestli muzu... nerikas jak dostanes zpravu do spamassassina.
Je vice cest.
Vsechny zpravy prochazi "cleanup"-em, ktery je soucasti postfixu a zde
se provadi"header-checks"
Problem je v tom, ze napriklad pokud spamassassin nakonfigurujes jako
"milter" (smtpd_milter = local:/var/run/spamass-milter.sock), tak zprava
nejdrive projde pres cleanup a potom teprve jde do spamassassina a tudis
radek hlavicky "X-Spam-Status: ..." je pridan az po "cisteni" zpravy a
tudis neprojde zminovanym header_checks.
Dalsi moznost je poslat zpravu do spamassassina pomoci smtp a
spamassassin ti to vrati na jiny port, kde samozrejme header_checks
zpravy presmeruje jak pozadujes.
Tak presne tuhle druhou moznost pouzivam, prijde mi to i jednodussi z
hlediska pripadneho hledani problemu, jsou to oddelene procesy a v logu
je hned videt jesli se to predalo nebo ne...a hlavne kdyz nastavim
zahazovat viry tak dorucovaci procesy se tim uz vubec nezabivaji tema
virama protoze zpravu zlikviduje hned amavis.
Treti moznost je pouzit amavis nebo nejaky LDA, ktery ti dovoli
definovat pravidla.
Tuhle treti moznost nejak nakombinoval na serveru kolega, ma tam predani
z postfixu do amavisu, tam to projede antivirem a pres dspam a nasledne
to vrati do maildropa...tam by mel prijit header check jesli se
nepletu...moc sem to nerozebiral jak to ma udelany, nemel jsem na to cas
zatim...
Co se me tyce, tak mam variantu 1 (milter) a cekam az vyjde Postfix 2.7,
kde Wietse doprogramoval direktivu "milter_header_checks", ktera jiz
prochazi zpravy az po vsech definovanych milterech. Prikladam uryvek
emailu od Wietse a timto mu velmi dekuji:
Tak na tohle se tesim, to vypada vylozene rozumne.
-----
I have added header checks for Milter-generated mail headers.
The feature is called "milter_header_checks".
It is available from Postfix mirrors as postfix-2.7-20090607, and
also available as an optional patch for Postfix 2.6.
Wietse
milter_header_checks (default: empty)
Optional lookup tables for content inspection of message headers that
are produced by Milter applications. See the header_checks(5) manual
page available actions. Currently, PREPEND is not implemented.
The following example sends all mail that is marked as SPAM to a spam
handling machine. Note that matches are case-insensitive by default.
/etc/postfix/main.cf:
milter_header_checks = pcre:/etc/postfix/milter_header_checks
/etc/postfix/milter_header_checks:
/^X-SPAM-FLAG:\s+YES/ FILTER mysmtp:sanitizer.example.com:25
The milter_header_checks mechanism could also be used for whitelisting.
For example it could be used to skip heavy content scans for DKIM-
signed mail from known friendly domains.
This feature is available in Postfix 2.7, and as an optional patch for
Postfix 2.6.
-----
Jirka
__________ Informace od ESET NOD32 Antivirus, verze databaze 4160
(20090616) __________
Tuto zpravu proveril ESET NOD32 Antivirus.
http://www.eset.cz
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