21.3.2019, 19:44:12	info	disconnect from unknown[172.22.1.1] ehlo=1 quit=1 commands=2
21.3.2019, 19:44:12	info	connect from unknown[172.22.1.1]
21.3.2019, 19:44:12	info	WHITELISTED [172.22.1.1]:45615
21.3.2019, 19:44:12	info	CONNECT from [172.22.1.1]:45615 to [172.22.1.7]:25
21.3.2019, 19:42:59	info	disconnect from unknown[172.22.1.1] unknown=0/1 commands=0/1
21.3.2019, 19:42:59	info	lost connection after UNKNOWN from unknown[172.22.1.1]
21.3.2019, 19:42:49	info	connect from unknown[172.22.1.1]
21.3.2019, 19:42:49	info	WHITELISTED [172.22.1.1]:45553
21.3.2019, 19:42:49	info	CONNECT from [172.22.1.1]:45553 to [172.22.1.7]:25
21.3.2019, 19:42:49	info	cache proxy:btree:/var/lib/postfix/postscreen_cache full cleanup: retained=0 dropped=0 entries
21.3.2019, 19:40:08	info	daemon started -- version 3.3.0, configuration /opt/postfix/conf
21.3.2019, 19:40:08	info	starting the Postfix mail system
21.3.2019, 19:40:07	info	To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload"
21.3.2019, 19:40:07	info	See http://www.postfix.org/COMPATIBILITY_README.html for details
21.3.2019, 19:40:07	info	Postfix is running with backwards-compatible default settings