I'm trying to add catch-alls to my docker-mailserver. I've created a multi-value mailalias attribute in my user schema that works and delivers mail as it should. I've added @XYZ.io as an alias as I would in the postfix config but that doesn't work and just gets me undelievered returns my filters:

LDAP_QUERY_FILTER_USER=(&(objectClass=inetOrgPerson)(|(uid=%u)(mail=%u)))
LDAP_QUERY_FILTER_GROUP=(&(objectClass=groupOfUniqueNames)(uid=%s))
LDAP_QUERY_FILTER_ALIAS=(&(objectClass=inetOrgPerson)(|(mail=%s)(mailalias=%s)))
LDAP_QUERY_FILTER_DOMAIN=(|(mail=*@%s)(mailalias=*@%s))
DOVECOT_USER_FILTER=(&(objectClass=inetOrgPerson)(|(uid=%u)(mail=%u)))
DOVECOT_USER_ATTRS==uid=5000,=gid=5000,=home=/var/mail/%Ln,=mail=maildir:~/Maildir
DOVECOT_PASS_FILTER=(&(objectClass=inetOrgPerson)(|(uid=%u)(mail=%u)))

logs:

2025-01-05T19:03:40.196766+00:00 mx1 dovecot: lmtp(446): Connect from local
2025-01-05T19:03:40.257009+00:00 mx1 dovecot: auth: ldap(2@abc.xyz): unknown user 
2025-01-05T19:03:40.299816+00:00 mx1 postfix/lmtp[445]: B0563240301D: to=<2@abc.xyz>, relay=mx1.mailhost.tld[/var/run/dovecot/lmtp], delay=0.61, delays=0.48/0.02/0.01/0.1, dsn=5.1.1, status=bounced (host mx1.mailhost.tld[/var/run/dovecot/lmtp] said: 550 5.1.1 <2@abc.xyz> User doesn't exist: 2@abc.xyz (in reply to RCPT TO command))
2025-01-05T19:03:40.300028+00:00 mx1 dovecot: lmtp(446): Disconnect from local: Logged out (state=READY)

That's a known limitation of LLDAP: you can't search multi valued attributes

oh well

You can't query an element of a list (or check whether the list contains the element)

weird it seems to be working for non catch all

Have you tried with more than one element in the list?

wait now it doesnt

Yeah, sorry about that

ill have to hardcode the catch all into the dovecot conf then somehow