# mysql_virtual_transport_maps.cf
user = postfix
password = ######
hosts = localhost
dbname = postfix
query = SELECT destination FROM domain WHERE domain='%d' AND transport='relay' AND active='1'


Aug  8 06:42:23 warpath postfix/qmgr[3501]: warning: connect to transport private/mail.blah.com: No such file or directory
Aug  8 06:42:23 warpath postfix/qmgr[3501]: warning: connect to transport private/retry: Connection refused