John Allen: > As postscreen does dnsbl lookups do I still need the reject_rbl_client > entries in smtpd_recipient_restrictions? Do the latter entries do more > than the dnsbl entries?
It does not hurt. The DNS reply is cached in the DNS server. > My postscreen setup would be something like: > > # postscreen_access_list = permit_mynetworks #### do I need this That is the default setting. It avoids problems with non-standard SMTP implementations (tests, appliances, etc.). > postscreen_bare_newline_enable = yes I would not recommend the bare_newline, non_smtp, or pipelining tests unless you are willing to accept delays similar to greylisting. Wietse