Hi all,
we have a security requirement to lock down incoming and outgoing access for some of the mailboxes in our environment. as a result, we created 4 transport rules for this matter, in order of priority:
1. restrict all mails sent 'outside the organization' with no exceptions for the specified mailboxes
2. restrict all mails sent 'inside the organization' with no exceptions for the specified mailboxes
3. restrict all mails received from 'outside the organization' unless sender address pattern matches @ourdearpartner.com for the specified mailboxes
4. restrict all mails received from 'inside the organization' with no exceptions for the specified mailboxes
generally, incoming rules works fine since there can be only one sender. Problem occurs when the specified mailboxes attempt to send a single mail to 2 recipients, one inside and one outside the organization. depending on the order of rule priority, mails to either one of the recipient will go through. Note that none of the rules has the 'Stop processing more rules' option checked. The behaviour seems to be as long as one of the rules have applied, other rules are ignored.
we have moved from domino recently and its a big security breach for us. can anyone shed some lights? TIA