On 2021-03-03 10:45, natan wrote:
This is server for incomming e-mail with many vdomain and vusers
On 03.03.21 11:38, Benny Pedersen wrote:
number of domains is irrelevant for backscatter
I check rbl in smtpd_recipient_restrictions
..
reject_rbl_client b.barracudacentral.org,
reject_rbl_client dynamic.rbl.tld,
reject_rbl_client bl.spamcop.net,
reject_rbl_client zen.spamhaus.org,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client dnsbl.sorbs.net,
reject_rbl_client ips.backscatterer.org,
permit
move this to smtpd_client...
to make impossible whitelisting senders and/or recipients?
btw, postscreen does that job much better than smtpd_*_restrictions
but after reject_unlisted_recipient
harden your config
when you use permit, are you sure it does not permit backscatter later
?, dont accept and bounce
i still need postconf -nf perferble to help more, all i can do without
it it will be best expirense and google for my part
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