Re: Discarding RBL-Mails, forwarding others
Dietmar Braun wrote: Wednesday, September 26, 2007, 12:12:13 PM, you wrote: m then you should say what exactly you want to achieve. we could spend a month at guess games. I think I said all you have to know - the one missing was just the domain dependent thing. Additionally, this rejects RBL listed mails - but I want to discard them to /dev/null... m This is a _bad_ idea. not only will you be wasting resources reading m data that you want handle, but you run the risk of discarding legitmate m mail. m (note that reject != bounce). I know that. In this case, it's ok because it is a 100% spamtrap domain. I'm not sure I understand your goal. do you really want to not reject (421 or other) such mail at smtp time for some reason, or you don't care if it's a reject or a discard? do you want to discard so that client thinks the message was delivered (so it won't retry)? m you can use rbl_reply_maps to set the reply code to 421 so that postfix m closes the connection. only use this for those RBL that list zombes m (spamhaus pbl). otherwise, you'll need to watch your logs for retries m from MTAs and explicitely reject them. m Please understand that this is not SA related. so followup on the m postfix users list. Since I know Postfix quite good, I think this cannot be done with Postfix features - you will need to expand it with SA and perhaps procmail. postfix has DISCARD action that you can use after SA. you can for example let SA add its headers, and in the after-the-filter postfix, use header_checks to looks for SA headers and discard mail if a match is found.
Re[2]: Discarding RBL-Mails, forwarding others
Wednesday, September 26, 2007, 12:12:13 PM, you wrote: m then you should say what exactly you want to achieve. we could spend a month at guess games. I think I said all you have to know - the one missing was just the domain dependent thing. Additionally, this rejects RBL listed mails - but I want to discard them to /dev/null... m This is a _bad_ idea. not only will you be wasting resources reading m data that you want handle, but you run the risk of discarding legitmate m mail. m (note that reject != bounce). I know that. In this case, it's ok because it is a 100% spamtrap domain. m you can use rbl_reply_maps to set the reply code to 421 so that postfix m closes the connection. only use this for those RBL that list zombes m (spamhaus pbl). otherwise, you'll need to watch your logs for retries m from MTAs and explicitely reject them. m Please understand that this is not SA related. so followup on the m postfix users list. Since I know Postfix quite good, I think this cannot be done with Postfix features - you will need to expand it with SA and perhaps procmail. That was the reason I asked here... Dietmar
Re[2]: Discarding RBL-Mails, forwarding others
Tuesday, September 25, 2007, 2:15:54 PM, you wrote: - all mails coming from hosts on a RBL should be /dev/nulled DJM http://www.postfix.org/uce.html#smtpd_client_restrictions - all other mails should be forwarded to another email address not on the same server DJM http://www.postfix.org/postconf.5.html#always_bcc Hm, I tried that, but it doesn't work, because it the configuration should be dependent of the recipient domain... Thanks, Dietmar
Re[2]: Discarding RBL-Mails, forwarding others
Tuesday, September 25, 2007, 2:15:54 PM, you wrote: DJM http://www.postfix.org/uce.html#smtpd_client_restrictions Additionally, this rejects RBL listed mails - but I want to discard them to /dev/null... Thanks, Dietmar -- NetCologne Gesellschaft fuer Telekommunikation mbH Am Coloneum 9, 50829 Koeln Geschaeftsfuehrer: Werner Hanf, Dipl.-Ing. Karl-Heinz Zankel HRB 25580, AG Koeln
Re: Discarding RBL-Mails, forwarding others
Dietmar Braun wrote: DJM http://www.postfix.org/postconf.5.html#always_bcc Hm, I tried that, but it doesn't work, because it the configuration should be dependent of the recipient domain... [please ask on the postfix users list, instead of here] then you should say what exactly you want to achieve. we could spend a month at guess games. consider using recipient_bcc_maps. if by forwarding, you mean redirecting (and not sending a copy), then use virtual_alias_maps. Tuesday, September 25, 2007, 2:15:54 PM, you wrote: DJM http://www.postfix.org/uce.html#smtpd_client_restrictions Additionally, this rejects RBL listed mails - but I want to discard them to /dev/null... This is a _bad_ idea. not only will you be wasting resources reading data that you want handle, but you run the risk of discarding legitmate mail. (note that reject != bounce). you can use rbl_reply_maps to set the reply code to 421 so that postfix closes the connection. only use this for those RBL that list zombes (spamhaus pbl). otherwise, you'll need to watch your logs for retries from MTAs and explicitely reject them. Please understand that this is not SA related. so followup on the postfix users list.
Discarding RBL-Mails, forwarding others
Hi, I am working with Postfix and I am searching for a solution for the following issue: - all mails coming from hosts on a RBL should be /dev/nulled - all other mails should be forwarded to another email address not on the same server Can you give me some hints how to do that? Regards, Dietmar
Re: Discarding RBL-Mails, forwarding others
On Tue, 2007-09-25 at 12:39 +0200, Dietmar Braun wrote: Hi, I am working with Postfix and I am searching for a solution for the following issue: - all mails coming from hosts on a RBL should be /dev/nulled http://www.postfix.org/uce.html#smtpd_client_restrictions - all other mails should be forwarded to another email address not on the same server http://www.postfix.org/postconf.5.html#always_bcc -- Daniel J McDonald, CCIE # 2495, CISSP # 78281, CNX Austin Energy http://www.austinenergy.com
