We've found on 2 machines that since updating to NIS 2011 18.5.0.125 some Outgoing Emails are not reaching their recipient.
It's strange because it's not all Email addresses just a select few which we had no problems with prior to the update.
I've turned off the outgoing scan but this has not made any difference.
It's a fairly urgent issue and would appreciate any advice on what to try next.
Thanks.