SMTP Timeout

Client is consistently getting

Task 'mail.xyz.com - Sending' reported error (0x8004210B)
: 'The operation timed out waiting for a response from the
sending (SMTP) server. If you continue to receive this
message, contact your server administrator or Internet
service provider (ISP).'

We've checked his firewall, I've been into the logs and can see him connecting and then disconnecting normally, we've tried getting him to up his server timeout and no-one else is having this problem.

cPanel on RH9 and one confused non-server admin

Any help appreciated

 

 

 

 

Top