Alerts not send by email

[MBear]

Alerts not send by email

[Alexei]

Make sure that all parameters for SMTP (email) server have correct values. Also, check zabbix_suckerd's log file for any error or warning messages.

[MBear]

zabbix_suckerd:
Error receiving initial string from SMTP server.
Error sending alert ID [1668]

[Alexei]

The message means that ZABBIX has succesfully connected to a SMTP server, but the SMTP server didn't send welcome string back within 10 (hardcoded) seconds.

Try to telnet smptp_server 25 to see what's wrong. I think the SMTP server spends too much time doing reverse DNS lookup for incoming connections.