Follow-up with our solution: issue was caused by ASAs default SMTP inspection rule; resolved by network admins by disabling SMTP inspection.
Kristjan On Wed, Apr 29, 2015 at 4:51 PM, Kristjan Nii <krstjn.v...@gmail.com> wrote: > Thank you, Wietse ja Bill for your advice and tips (and patience); we were > able to resolve the issue. In fact, it was still ASA-related. > > >
