Temporary Lookup Failure

[Brad]

Hi All,

Have a CentOS 7, dovecot and postfix setup.

Can get mail via 995 SSL/TLS

Can send mail to virtual users and auto creation works using 
/etc/dovecot/passwd file via mail command.

Using the dovecot lmtp and can login via 465 but the user lookup fails 
via postfix.


in postfix main.cf have virtual_transport = lmtp:unix:private/dovecot-lmtp

in dovecot.log I am seeing no errors
in dovecot-info.log no errors either

in maillog I am seeing:
postfix/smtps/smtpd warning hash:/etc/postfix/virtual is unavailable 
open database /etc/postfix/virtual.db No such file.

Note: I did go through creating the virtual.db and associated files but 
figured that it cant be correct as I want lmtp to handle it and it 
didn't work anyways, so I removed it.


NOQUEUE reject RCPT from unknown[x.x.x.x] 451 4.3.0 <user at domain> 
Temporary lookup failure from=<user at domain> to=<user at domain> proto=ESMTP 
helo=<localhost.localdomain> -- obfuscated

Tried every article I could find on the Internet to resolve this with 
out much luck.

Any pointers would be greatly appreciated or if you need specific config 
details just let me know.

Thanks,
Brad