Fortigate v7.0.9: Email notifcations not working

Hello,

You may consider to collect debugs traces below once the issue is triggered:

diag debug reset
diag debug enable
diag debug console timestamp enable
diag debug application alertmail -1

diagnose log alertmail test

Traffic sniffer:

diagnose sniffer packet any 'host <IP address of the server>' 6 0 a

I also tested now with our internal mail server. the commands provided following output.

Seems to provide the following out put:

2023-02-08 13:58:39 mail_info:
from:"internal mail server" user:(null)
2023-02-08 13:58:39 _init_mail_info: no user
2023-02-08 13:58:39 mail_info:
reverse path:(null)
user name:(null)
2023-02-08 13:58:39 to[0]:
2023-02-08 13:58:39 to[1]:
2023-02-08 13:58:39 to[2]:
2023-02-08 13:58:39 <==_init_mail_info
2023-02-08 13:58:39 create session
2023-02-08 13:58:39 resolve "IP internal mail server" to 1 IP
2023-02-08 13:58:39 ==> send mail
2023-02-08 13:58:39 can not start session

0 packets received by filter
0 packets dropped by kernel