Timeout connection problem. The server Administrator of the receiving mail will have the option to confirm the real issue only.
Causes
- Typically, as a result of being blocked by the recipient firewall or filter.
- The server may experience a hardware issue.
Fixes
Step 1: Contact The Administrator
Contact the Administrator of the destination mail server for indicates on the specific explanation behind the error.
Step 2: Perform WHOIS
Typically require to perform WHOIS function on the mail server.