PROBLEM
I want to scan my outgoing mail for spam.

ENVIRONMENT

• On-Premise Server + WebMail Installations: Version 6.0 > Current Version

CAUSE

By default, Exim only checks inbound emails for spam. This is easily configurable, via the following steps:

RESOLUTION

1. Open up /usr/local/atmail/mailserver/configure.
2. Find:
   

   # Accept outgoing messages from authenticated users, no need to scan as spam
   accept  authenticated = *
    
   # Skip scanning messages from users that are trusted
   accept hosts = +relay_from_hosts
    
   # Skip if message over size
   accept condition = ${if > {$message_size}{50k} }
    
   # Pass the email via Spamassassin and don't scan messages over the specified size to save CPU
   # Append the X-Spam-Score and X-Spam-Report for all messages
   warn  message = X-Spam-Score: $spam_score
   condition = ${if < {$message_size}{50k} }
   hosts = ! +relay_from_hosts
   spam = nobody:true/defer_ok
    
   warn  message = X-Spam-Report: $spam_report
   condition = ${if < {$message_size}{50k} }
   hosts = ! +relay_from_hosts
   spam = nobody:true/defer_ok
    
   # Reject message if Spam-score is too high ( avoid wasted disk/CPU on obvious Spam messages)
   drop message = This message is rejected by the Anti-Spam System. Spam-score too high : $spam_score spam points - Please reformat your email and send again
   spam = nobody:true/defer_ok
   hosts = ! +relay_from_hosts
   condition = ${if < {$message_size}{50k} }
   condition = ${if > {$spam_score_int}{100}{1}{0}}

3. Change the block so it looks like:
   

   # Skip if message over size
   accept condition = ${if > {$message_size}{50k} }
    
   # Pass the email via Spamassassin and don't scan messages over the specified size to save CPU
   # Append the X-Spam-Score and X-Spam-Report for all messages
   warn  message = X-Spam-Score: $spam_score
   condition = ${if < {$message_size}{50k} }
   spam = nobody:true/defer_ok
    
   warn  message = X-Spam-Report: $spam_report
   condition = ${if < {$message_size}{50k} }
   spam = nobody:true/defer_ok
    
   # Reject message if Spam-score is too high ( avoid wasted disk/CPU on obvious Spam messages)
   drop message = This message is rejected by the Anti-Spam System. Spam-score too high : $spam_score spam points - Please reformat your email and send again
   spam = nobody:true/defer_ok
   condition = ${if < {$message_size}{50k} }
   condition = ${if > {$spam_score_int}{100}{1}{0}}

4. Go to WebAdmin > Services > Anti-Spam, and set 'Skip Trusted' to off. Save changes.
5. Restart Atmail.
   

   % /etc/init.d/atmailserver restart