Re: [exim] spam acl condition syntax

Thanks to all who helped me on this
In case anyone else is searching and wants to do the same thing.

How do I get mail sent with a single envelope-to of postmaster to
bypass spam checks

Answer
Set up two variables acl_m0 = 1 if the mail is rcpt to:
postmaster@anything
acl_m1 = 1 if there is any other rcpt to:

In the rcpt acl find the part where postmaster is accepted and modify
as follows

<snip>
   accept  local_parts   = postmaster
           domains       = +local_domains
         set acl_m0 = 1

   warn
         set acl_m1 = 1
<snip>

Then in the data acl

   # Always add X-Spam-Score and X-Spam-Report headers, using SA  
system-wide settings
   # (user "nobody"), no matter if over threshold or not.
   warn  message = X-Spam-Score: $spam_score ($spam_bar)
         log_message = Spam Score $spam_score P=$acl_m0 O=$acl_m1
         spam = nobody:true
   warn  message = X-Spam-Report: $spam_report
         spam = nobody:true

   # Add X-Spam-Flag if spam is over system-wide threshold
   warn message = X-Spam-Flag: YES
        spam = nobody

   warn message = X-new-Subject: [Suspected Spam] $h_Subject
         log_message= Spam detected
         spam = nobody

# Accept the message if it is sent to postmaster ONLY
# m0 = message to postmaster
# m1 = message to other
accept
         condition = $acl_m0
         condition = ${if ={$acl_m1}{1}{0}{1}}
         logwrite = Postmaster spam block exception

   # Reject spam messages with score over 10, using an extra condition.
   deny  message = This message is over the system wide anti-spam  
threshold.
         spam = nobody:true/defer_ok
         condition = ${if >{$spam_score_int}{100}{1}{0}}

# finally accept all the rest
accept