Paweł Burzyński wrote:
> smtpd_banner = Poczta CBMM PAN
>
Wietse answered the question precisely.
Part of the reason may be that you do not follow the SMTP protocol in
this line.
http://www.postfix.org/postconf.5.html#smtpd_banner says it MUST start
with $myhostname.
Also removing ESMTP from that line may limit features in Postfix that
outside clients might think do not exist.
> smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated,
> reject_unauth_destination, reject_non_fqdn_hostname,
> reject_non_fqdn_recipient, reject_unauth_pipelining,
> reject_unknown_recipient_domain, reject_rhsbl_recipient dnsbl.njabl.org,
>reject_rhsbl_recipient blackholes.mail-abuse.org,
> reject_rhsbl_recipient relays.mail-abuse.org, reject_rbl_client
> sbl.spamhaus.org,reject_rbl_client cbl.abuseat.org,reject_rbl_client
> dul.dnsbl.sorbs.net,reject_rbl_client pbl.spamhaus.org,
> reject_rbl_client blackholes.easynet.nl,reject_rbl_client
> proxies.blackholes.wirehub.net,reject_rbl_client bl.spamcop.net,
> reject_rhsbl_client blackhole.securitysage.com,reject_rhsbl_sender
> blackhole.securitysage.com,reject_rhsbl_sender dsn.rfc-ignorant.org
> reject_rbl_client dynamic.rbl.tld,reject_rhsbl_client revdns.rbl.tld,
> reject_rhsbl_helo revdns.rbl.tld,reject_rbl_client sbl-xbl.spamhaus.org,
> permit
>
As a side note, you can merge (sbl|pbl|sbl-xbl).spamhaus.org and
cbl.abuseat.org into zen.spamhaus.org.
One lookup instead of four.