On Mon, 3 Aug 2020, Kishore Potnuru wrote:

=============== Jul 28 11:14:23 auth: Fatal: Master passdb can't have pass=yes if there are no passdbs Jul 28 11:14:23 master: Error: service(auth): command startup failed, throttling

after the above error, I have commented "pass=yes" in production1 (old server) server, then I see the below error.

================ Jul 28 11:17:10 auth: Fatal: No passdbs specified in configuration file. PLAIN mechanism needs one Jul 28 11:17:10 master: Error: service(auth): command startup failed, throttling

========================================= My old server dovecot.conf (production1):

passdb { args = /etc/dovecot/passwd driver = passwd-file master = yes pass = yes }

My interpretation of your error messages is you need 2 sets of credentials: regular users and master users. You've only supplied master passwords. You'll need

# Contains master users credentials
passdb {
	args = /etc/dovecot/master-passwd
	driver = passwd-file
	master = yes
	pass = yes
}

# Contains regular user credentials
passdb {
	args = /etc/dovecot/passwd
	driver = passwd-file
}

Joseph Tam jtam.home@gmail.com