postfix/smtpd[8568]: warning: hostname zg-0520a-211.stretchoid.com does
not resolve to address 192.241.205.222: Name or service not known
postfix/smtpd[8568]: connect from unknown[192.241.205.222]
postfix/smtpd[8568]: lost connection after UNKNOWN from
unknown[192.241.205.222]
postfix/smtpd[8568]: disconnect from unknown[192.241.205.222]
unknown=0/1 commands=0/1
postfix/smtpd[8585]: warning: haproxy read: unexpected EOF
postfix/smtpd[8585]: connect from unknown[unknown]
postfix/smtpd[8585]: disconnect from unknown[unknown] commands=0/0
I would like a better understanding of what is happening when the logs
include "warning: haproxy read:". Is that generated by postfix based on
what? Or is it generated by haproxy and postfix just pass thru displays
it?
Yes the server sits behind haproxy, but what has me curious is on most
log entries like the first one above there is no mention of haproxy, so
why is it on the second log entry? Whats the difference?
FYI: -o smtpd_upstream_proxy_protocol=haproxy is set under submission.
