One of the major changes between 8 and 9 is in the handling of mail policies, which can now be a lot more sophisticated. My question is regarding the migration of a policy with a large list of senders; in a couple of cases my policies have over 100 domains.
Before migration, each entry had its own line in the policy much like a content dictionary. After migration, the policy is presented as a single line "domain1[or]domain2[or]..."but when I add a new domain, this is added as a new line, echoing the old format. In almost all of my policies, only senders or recipients will be listed and the ANY term can be on the other side of the policy, so both formats are valid.
First question: given the extreme length of the concatenated old policy entry, is there a practical limit that I need to start worrying about? The policies don't appear to be failing.
Second question: which approach is more efficient? From the standpoint of viewing and maintaining a policy, I'm inclined to unload the old concatenated line and reload it line by line. However, I'm also wondering if those concatenated ORs are more efficient than multiple lines in a policy.
Apologies if there has been a previous discussion of this - I have tried internal and external searches, but if there is anything I couldn't hit the right keywords.
