Delivery Temporarily Suspended Unknown Mail Transport Error Postfix Upd [UPDATED]
Send a test email. Watch for:
Grep for the specific message ID:
: Look at the end of your /var/log/mail.log to see which specific transport is failing. Then, ensure that transport is correctly defined and uncommented in Postfix master.cf. Send a test email
: If Postfix is running in a "chroot" environment, it may lose access to necessary system files (like /etc/services edit /etc/postfix/main.cf :
Look for lines surrounding the error. A typical failure block might look like this: Send a test email
For remote server flakiness, edit /etc/postfix/main.cf :
