Viktor Dukhovni: > 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.
The doc should include this text from virtual(5), canonical(5), etc., which use a similar lookup stratgy. ADDRESS EXTENSION When a mail address localpart contains the optional recipient delimiter (e.g., user+foo@domain), the lookup order becomes: user+foo@domain, user@domain, user+foo, user, and @domain. Wietse