This bug was fixed in the package postfix - 3.3.0-1ubuntu0.2
--------------- postfix (3.3.0-1ubuntu0.2) bionic; urgency=medium
[ Karl Stenerud ] * d/postfix-{cdb,ldap,lmdb,mysql,pcre,pgsql}.postinst, d/postfix.postinst: Handle empty alias_database field in main.cf (LP: #1791139 Closes: #908221)
-- Andreas Hasenack <email address hidden> Thu, 11 Oct 2018 17:15:25 -0300
This bug was fixed in the package postfix - 3.3.0-1ubuntu0.2
---------------
postfix (3.3.0-1ubuntu0.2) bionic; urgency=medium
[ Karl Stenerud ] {cdb,ldap, lmdb,mysql, pcre,pgsql} .postinst, d/postfix.postinst:
* d/postfix-
Handle empty alias_database field in main.cf (LP: #1791139 Closes: #908221)
-- Andreas Hasenack <email address hidden> Thu, 11 Oct 2018 17:15:25 -0300