Deferred: lost connection with cluster1.us.messagelabs.com[216.82.242.44] while receiving the initial server greeting

Hi,

But this is not the only messagelabs server that would give me this error, and we have this problem with a lot of clients.

Sometimes the emails are delivered in 30 minutes, sometimes after 20 hours , and a lot of times the emails will be dropped.

My ip is 67.211.124.64

Please let me know if my ip is blacklisted somewhere by messagelabs, we have this problem for more than 6 months.

Thank you

Mike