Hi Axel > This is probably related to the recipient_delimiter setting, which defaults > to '+'.
Where is there such a setting in the dovecot config itself? The postfix MTA knows of such a delimiter, but the MTA is not involved as I connect directly to the dovecot LMTP service. Or does dovecot somehow try to read the postfix config? That would not make any sense. I suppose the dovecot LMTP or userdb lookup code has some hardcoded 'feature' threating + as a delimiter for userdb lookups, thus fails if + is not used as such a delimiter. -Benoit-
