> I did not have time to fully test this patch, and guess what, some > untested code does not work. I'll send a revised version Sunday.
An updated patch for Postfix 2.10 and 2.11 can be found on the source-code mirrors, for example: ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.10.diff ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.10.diff.asc ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.10.diff.sig ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.11.diff ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.11.diff.asc ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/feature-patches/20141228-smtp-verify-target-2.11.diff.sig This is a minimal patch to support the smtp_address_verify_target feature: smtp_address_verify_target (default: rcpt) In the context of email address verification, the SMTP protocol stage that determines whether an email address is deliverable. Specify one of "rcpt" or "data". The latter is needed with remote SMTP servers that reject recipients after the DATA command. This does not include ssupport for smtp_address_verify_target_maps, as that would complicate patches for older Postfix releases. To use smtp_address_verify_target selectively, use the transport_maps feature: /etc/postfix/main.cf: transport_maps = hash:/etc/postfix/transport /etc/postfix/transport: smtp-domain_that_verifies_after_data smtp-data-target: lmtp-domain_that_verifies_after_data lmtp-data-target: /etc/postfix/master.cf: smtp-data-target unix - - n - - smtp -o smtp_address_verify_target=data lmtp-data-target unix - - n - - lmtp -o lmtp_address_verify_target=data Unselective use is not harmful, but it will result in unnecessary "lost connection after DATA" events at remote SMTP/LMTP servers. Wietse
