Steps to reproduce:

1. Configured send Zabbix server alert by gmail with mailx+ scripts
2. when testing by "echo "This is a mail content" | mail -s "Title" -r [email protected]", it's ok , i can receive mail
3. but when zabbix server well configured, i can't receive alert mail.
4. in the action log, it shows send
5. 
6. Please help to fix this...

Result:
See screenshot...
See log file...
See memory dump...
Expected:
See screenshot....
See attached patch file...