These forums are locked and archived, but all topics have been migrated to the new forum. You can search for this topic on the new forum: Search for Unable to send mail from Webmin on the new forum.
I have a fresh install of Webmin, where i created a Backup Schedule of MySql Databases and added a mail confirmation for every successful backups. When i do a manual backup or automatic backup, even after a successful backup, i don't receive any mail.
I checked maillog, i don't see the mail being sent. Also, it is not in the queue. I tried with Sendmail being the default and also with Postfix after disabling Sendmail.
Note: Local E-Mail alerts like SSH login failure, SU alerts work fine, i can read them using "Read User Mail" --> "Username"
It works now, i have enabled external SMTP support for outgoing mail. :-)