Add new option to allow suspicious macros depending on recipient

[robert-scheck]

I think it would be helpful to introduce a new configuration option to allow suspicious macros depending on recipient, so that special destination e-mail addresses/mailboxes still can receive e-mails with suspicious macros. A typical scenario that comes to my mind is abuse@… or postmaster@….

In order to be flexible, the suggestion is to make the configuration option something like an array of strings with regular expression support. If I run example.net and would like to ensure that somebody can send suspicious macros to abuse@example.net, that's one case (= string). However, if I (or my users) would like to be able to report such suspicious macros, including to remote abuse teams of foreign domains, something like ^(abuse|postmaster)@ (= regular expressions) could get important, too.

[dvadell]

Hi
I would love to have this. I have 50 domains in one server, and it would be great to start using it on a per-domain or per-mailbox basis.

Thanks for making macromilter available!