mail: Null message body; hope that's ok

[belrpr]

When enabling SMTP I've receive the following error in the log:
mail: Null message body; hope that's ok

The mail is sent by the user "mail from" and sent to "mail to".
The subject of the mail is: "SQL Server Backup Result"
But the body is empty.

[s-l-h]

we encountered the same issue and fixed it, by adusting the following line in docker-entrypoint.sh:

# Write log to stdout
cronLogConfig="2>&1 | tee /proc/1/fd/1"

[belrpr]

Going to look into it. Never heard of this before.
I am also using docking on a Synology nas.

[belrpr]

Can't find it where to change it on a synology.