On Fri, 03 Jul 2009, priscilla wrote:

We want to allow only authenticated sender to send mails.

The incomplete set of configuration variables you list below are unrelated to this goal. If you want to do something other than simply "allow authenticated sender to send mails", then please clarify.

We have configured the following in postfix's main.cf to implement the same. smtpd_sender_login_maps=<ldap> smtpd_reject_unlisted_sender=yes smtpd_sender_restrictions=reject_sender_login_mismatch check_sender_access <ldap>

No, read DEBUG_README (a document to which you were referred upon joining this mailing list) and provide at least the output of 'postconf -n' when soliciting help.

But we get the following error message The mail server responded 5.7.1 <recipient address> sender address rejected now owned by user <sender> . Please check the message recipients and try again.

Cut-and-paste instead of introducing typos by manually transcribing excerpts from your maillog. Nonetheless, the rejection text is quite clear; also see: http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch