Lowest Number MX Record Points to Local Host Rejected RCPT Error
When MTA (Mail Transport Agent) such as Sendmail and Exim attempts to relay and transmits email through the [...]
Exim Sender Verify Callout or Callback Could Not Complete or Verification Failed Error
If you're running web host or email server using Exim or Sendmail as mail transfer agent (MTA), and [...]
Email Bounces Back with “unrouteable mail domain” Error
At your own mail server provided by the web hosting service, where the mail transfer agent (MTA) is [...]