Using smtp-relay.gmail.com - unexpected eof while reading

[Alen_Nik]

Hi,
please if someone is using smtp-relay.gmail.com as Media type for sending mail from Zabbix 6.0.18. I got randomly failing emails with errors in Zabbix server log:

320470:20230612:083954.187 query [txnlev:1] [update alerts set status=0,retries=1,error='Failure when receiving data from the peer: OpenSSL SSL_read: error:0A000126:SSL routines::unexpected eof while reading
, errno 0' where alertid=1384468;

and this

320470:20230612:083821.581 query [txnlev:1] [update alerts set status=0,retries=1,error='Access denied to remote resource: Remote access denied: 421' where alertid=1384467;

]

Will also check the network, but I found this similar issue: https://bbs.archlinux.org/viewtopic.php?id=281863, so was thinking was some kind of bug in Zabbix also.

Thanks,