ssoma-mda: duplicate prevention

[ssoma-mda.git] / Documentation / ssoma-mda.txt

diff --git a/Documentation/ssoma-mda.txt b/Documentation/ssoma-mda.txt
index 0ef1501f4dcfd4adf66b8897176c507bcfe3d730..07cfd126aed54d6fbc9276a0638547b07ebd16c9 100644 (file)
--- a/Documentation/ssoma-mda.txt
+++ b/Documentation/ssoma-mda.txt
@@ -6,7 +6,7 @@ ssoma-mda - mail delivery agent for ssoma
 
 # SYNOPSIS
 
-ssoma-mda /path/to/ssoma/repository.git < message
+ssoma-mda [-1] /path/to/ssoma/repository.git < message
 
 # DESCRIPTION
 
@@ -20,6 +20,12 @@ ssoma-mda takes no command-line options and does not alter its own
 permissions.  This must be done by the MTA or MDA which invokes
 ssoma-mda.
 
+# OPTIONS
+
+-1
+:      Only allow a Message-ID to appear once in the database.
+       Future messages with an identical Message-ID will not be allowed.
+
 # FILES
 
 See ssoma_repository(5) for details.