in my access map 'mydomains' alongwith other allowed domains i've put an entry as follows: <> OK example.com OK is the above null sender is required ?! will this cause any harm? i think i'd try config sasl-auth -bharathan
On Mon, Nov 23, 2009 at 4:51 PM, Robert Schetterer <rob...@schetterer.org>wrote: > K bharathan schrieb: > > hi all > > my relay smtp out got listed with backscatterer.org > > <http://backscatterer.org>; the following is my postconf: > > > > alias_maps = hash:/etc/aliases > > biff = no > > canonical_maps = hash:/etc/postfix/canonical > > command_directory = /usr/sbin > > config_directory = /etc/postfix > > content_filter = amavisd-new:[127.0.0.1]:10024 > > daemon_directory = /usr/lib/postfix > > debug_peer_level = 2 > > defer_transports = > > disable_dns_lookups = no > > disable_mime_output_conversion = no > > disable_vrfy_command = yes > > home_mailbox = Maildir/ > > html_directory = /usr/share/doc/packages/postfix23/html > > inet_interfaces = all > > inet_protocols = all > > local_recipient_maps = > > local_transport = error:local mail delivery is disabled > > mail_owner = postfix > > mail_spool_directory = /var/mail > > mailbox_command = > > mailbox_size_limit = 0 > > mailbox_transport = > > mailq_path = /usr/bin/mailq > > manpage_directory = /usr/share/man > > masquerade_classes = envelope_sender, header_sender, header_recipient > > masquerade_domains = > > masquerade_exceptions = root > > message_size_limit = 25600000 > > mydestination = > > myhostname = smtp.example.com <http://smtp.example.com> > > mynetworks = 192.168.1.0/24 <http://192.168.1.0/24> 192.168.20.0/24 > > <http://192.168.20.0/24> 127.0.0.0/8 <http://127.0.0.0/8> > > mynetworks_style = subnet > > myorigin = example.com <http://example.com> > > newaliases_path = /usr/bin/newaliases > > queue_directory = /var/spool/postfix > > readme_directory = /usr/share/doc/packages/postfix23/README_FILES > > relay_domains = > > relay_recipient_maps = hash:/etc/postfix/relay_recipients > > relocated_maps = hash:/etc/postfix/relocated > > sample_directory = /usr/share/doc/packages/postfix23/samples > > sender_canonical_maps = hash:/etc/postfix/sender_canonical > > sendmail_path = /usr/sbin/sendmail > > setgid_group = maildrop > > smtp_sasl_auth_enable = no > > smtp_use_tls = no > > smtpd_client_restrictions = > > > > smtpd_data_restrictions = > > reject_multi_recipient_bounce > > reject_unauth_pipelining > > permit > > > > smtpd_helo_required = yes > > smtpd_helo_restrictions = > > smtpd_recipient_restrictions = > > reject_non_fqdn_recipient > > reject_non_fqdn_sender > > reject_unknown_sender_domain > > reject_unknown_recipient_domain > > permit_mynetworks > > reject_unauth_destination > > > > check_recipient_access hash:/etc/postfix/roleaccount_exceptions > > reject_non_fqdn_hostname > > reject_invalid_hostname > > check_helo_access pcre:/etc/postfix/helo_checks > > reject_rbl_client zen.spamhaus.org <http://zen.spamhaus.org> permit > > smtpd_sasl_auth_enable = no > > > > smtpd_sender_restrictions = > > check_sender_access hash:/etc/postfix/mydomains > > check_recipient_access hash:/etc/postfix/allowed_forwards > > reject_unauth_destination > > smtpd_use_tls = no > > strict_8bitmime = no > > strict_rfc821_envelopes = no > > transport_maps = hash:/etc/postfix/transport > > unknown_local_recipient_reject_code = 550 > > > > the server got a list of domains (those domains mail servers use this > > server as relayhost)to relay out and does only smtp out; what could be > > wrong in the above config; appreciate ur assistance upon this > > thats the reason, guess your relay clients get lots of i.e spam/virus > mail,perhaps they bounce after allready got the mail for nonexistent > domains/mailaccounts etc ( do they have catch alls, buggy virus > solutions , such are mail the faked sender for info by marking mail as > spam , virus etc? ) vacations and other nonsense in, and deliver out > over your relay > look your logs,do analyze, filter spam/virus etc before send out > perhaps dont relay by ip, use sasl auth to restrict relay clients > to mail domains which your relay has i.e mx delegated > After all its easy to get on that rbl, dont be to much afraid of it, but > look out for systematic setup bugs of your clients by looking at your logs, > perhaps set hold outgoing mails for that a few hours, dont accept > mails from nonexisting domains from clients etc, listing can have many > reasons > > > > > thanks > > > > -bharathan > > > > > -- > Best Regards > > MfG Robert Schetterer > > Germany/Munich/Bavaria >
