Pool of erros in smtpserver log because of option smtpchk in haproxy.cfg

@rannick wrote:

Config:

backend smtp-backend-mail
# Layer 4 based load balancing
mode tcp
option smtpchk

Error:

smtpserver.log

ERROR smtpserver: Socket to hostname closed remotely.
java.net.SocketException: Connection reset

haproxy.log

31 03:31:03 localhost haproxy[13975]: IP:60416 [31/Mar/2020:03:31:03.627] https/2: Connection closed during SSL handshake
Mar 31 03:31:03 localhost haproxy[30585]: http http/ -1/-1/-1/-1/+0 400 +187 - - CR-- 0/0/0/0/0 0/0 “”
Mar 31 03:32:03 localhost haproxy[30585]: https/2: Connection closed during SSL handshake
Mar 31 03:32:03 localhost haproxy[13975]: http http/ -1/-1/-1/-1/+0 400 +187 - - CR-- 0/0/0/0/0 0/0 “”

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