Network Connect 6.5R3.1 and Apple Mail App

[eagle107_]

We are having issues with the Apple Mail App running very slow with the Mac Network Connect client. When uploading large email attachments to our Exchange 2007 servers using EWS, we are seeing only 3Kb/s to 10Kb/s transfer speeds and emails are taking over 20 minutes to send. We tested this using a T1 and an OC3 link with same results. Has anyone seen this same issue?

[jaym_]

Yes, here too. Though seems to mostly impact only certain Macs, not all Macs. Actually, ALL uploads are really slow for those Macs with the issue.