I'm in the process of evaluating using Zimbra instead of managing the individual components in my mail environment. Currently, I have some specific delivery rules based on the PCRE (perl compliant RegEx) support in postfix. While I could resolve some of my dependency on PCRE by qualifying aliases for users, there are some delivery rules that only PCRE can support.
Has anyone experimented with adding PCRE maps to zimbra's postfix mta? It seems to me that this should be straight forward, if PCRE support was built into Zimbra's postfix. Any thoughts about the correct way to do this, such that this change would survive an upgrade?