spam postfix

smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
check_client_access hash:/etc/postfix/client_checks reject_unknown_client reject_invalid_hostname reject_non_fqdn_hostname reject_unknown_hostname reject_unknown_sender_domain reject_non_fqdn_sender
#reject_rbl_client relays.ordb.org
#reject_rbl_client opm.blitzed.org
reject_rbl_client list.dsbl.org
reject_rbl_client sbl-xbl.spamhaus.org
reject_rbl_client cbl.abuseat.org
reject_rbl_client dul.dnsbl.sorbs.net
reject_rbl_client bl.spamcop.net
reject_rbl_client korea.services.net
reject_rbl_client images.rbl.msrbl.net
check_recipient_access hash:/etc/postfix/recipient_checks
#reject_rbl_client fresh.dict.rbl.arix.com
#reject_rbl_client dnsbl-1.uceprotect.net
reject_rbl_client cn.ascc.dnsbl.bit.nl
reject_rbl_client ar.ascc.dnsbl.bit.nl
reject_rbl_client br.ascc.dnsbl.bit.nl




reject_unknown_client

client ip nin ptr ina bakıyor eğer yoksa reject.eğer varsa ptr ın A kaydına bakıyor.client ip ve A kaydı eşleşmiyorsa reject.

Dec 23 08:22:03 posta postfix/smtpd[16534]: 72747284019: reject: RCPT from unknown[88.255.235.9]: 450 Client host rejected: cannot find your hostname, [88.255.235.9]; from= to= proto=ESMTP helo=

88.255.235.9 numarasanına ait PTR kaydı mail.ttmail.com.
mail.ttmail.com. adının A kaydı yok.
bu yüzden unknown client oluyor ve rejected.

reject_unknown_hostname

helo= kismindaki hostname in A kaydı yok ise reject.

Dec 25 15:09:49 posta postfix/smtpd[694]: 8E344284174: reject: RCPT from outbound.finansinvest.com[62.108.68.15]: 450 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=

burada helo= kısmındaki fnymailadk.fnylocal.com adı bir A kaydına sahip olmadığı için rejected.

reject_non_fqdn_hostname

helo kismindaki hostname in fqdn olması gerekiyor.

Dec 24 16:29:03 posta postfix/smtpd[12451]: 9465328408E: reject: RCPT from abjc115.neoplus.adsl.tpnet.pl[83.7.144.115]: 504 : Helo command rejected: need fully-qualified hostname; from= to= proto=ESMTP helo=

burada helo= kisminda marian-hwr5wjd0 fqdn değil.rejected.

reject_unknown_sender_domain

Dec 27 17:21:54 posta postfix/smtpd[957]: 90C0A28412C: reject: RCPT from aeev216.neoplus.adsl.tpnet.pl[79.186.125.216]: 450 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=



************************************************
smtpd_recipient_limit = 1000

to + cc + bcc = 1000 den fazla olamaz demek


http://www.irbs.net/internet/postfix/0611/1369.html


The mail client does not send a gigantic BCC field. The
client sends a MAIL FROM: command followed by ~1200 RCPT
TO: commands, followed by DATA. Postfix doesn't know (or
care) if these are BCC: or CC: or all in the To: header,
it's all just SMTP.

*******************************************************