On Wed, Jan 11, 2023 at 03:57:28PM +0100, Patrick Ben Koetter wrote: > Today I ran into a lookup problem where a sender (!) was using the RFC 5233 > subaddress schema so send a message e.g. as localpart+subaddress@domainpart > and lookups with smtpd_sender_login_maps failed because I was unable to come > up with a LDAP query_filter that would look for localpart@domainpart a ka > strip the subaddress.
http://www.postfix.org/postconf.5.html#recipient_delimiter The documentation isn't clear on whether extensions are handled in http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps but they are. You shouldn't need any LDAP-specific support here, Postfix will automatically generate a query with the extension elided. -- Viktor.