Thank you @Sebahat.hadzhi!
The idea of specifying the sender's address is brilliant.
I wasn't able to use the parameter you suggested adding.
When setting up a Cron Job, I need to set the environment variable MAILFROM="", immediately after defining MAILTO="", for it to work...
Hello!
I'm having a problem when a Cron job needs to send an email notification via the external SMTP relay (MSMTP).
When I test it via SSH using the following command, I don't encounter any issues:
echo -e "Subject: SMTP config confirmation\n\nEmail to confirm the SMTP configuration in...