This is odd. We have clients that use Gmail, yahoo etc., to send us email and recently there has been a major delay.
We checked the MessageTrackinglog and see no issue when the email actually hits our sever it is delivered quickly.
Tested with a Gmail account and it took 3 hours before reaching our server. Ensured Namservers, NS Records, MX records, DNS, SOA record, and all other connections for us are correct. We use Nettica as our host for DNS and their support tested all the MX and nameservers as well with no issue.
When we sent test with Hotmail it went through in 8 seconds and Gmail 3 hours, Yahoo 1 hour, and client specific email domains ranged from no is in seconds to others delayed over 4 hours.
Has anyone ever seen such a thing. I am at a dead end. I know it isn't our server, or DNS host but what else is there.
Please Please Please Help me.