I have a Postfix after-queue content filter that works fine on stock Ubuntu Postfix install. However, on a OS X Lion Server I'm testing out, I see this "auto-generated" language in the master.cf file:

# ==== Begin auto-generated section ========================================
# This section of the master.cf file is auto-generated by the Server Admin
#  Mail backend plugin whenever mails settings are modified.
smtp      inet  n       -       n       -       1       postscreen
smtpd     pass  -       -       n       -       -       smtpd -o receive_override_options=no_address_mappings

The problem is, to enable the filter the same area of the master.cf file has to be changed to have an entry like this:

smtp      inet  n       -       -       -       -       smtpd -o content_filter=mytest_filter:dummy

So, it looks like the line would be blown away every I make a change in Server Admin. Is there a better place for me to put the call to the filter such that it's persistent?

I appreciate any assistance and/or guidance!