-1999-03-02 09:44:33 10HmbS-0005vi-00 <= CALLER@test.ex U=CALLER P=local S=sss
-1999-03-02 09:44:33 10HmbS-0005vi-00 "should freeze this" first delivery
-1999-03-02 09:44:33 10HmbS-0005vi-00 => userz <system-filter> R=user_accept1 T=appendfile
-1999-03-02 09:44:33 10HmbT-0005vi-00 <= <> R=10HmbS-0005vi-00 U=EXIMUSER P=local S=sss
-1999-03-02 09:44:33 10HmbT-0005vi-00 "Message frozen" first delivery
-1999-03-02 09:44:33 10HmbT-0005vi-00 => postmaster <postmaster@test.ex> R=user_accept1 T=appendfile
-1999-03-02 09:44:33 10HmbT-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbS-0005vi-00 Frozen by the system filter: subject was "should freeze this"\nHere are two extra\nlines of text
-1999-03-02 09:44:33 Start queue run: pid=pppp -qqff -R userx
-1999-03-02 09:44:33 10HmbS-0005vi-00 Unfrozen by forced delivery
-1999-03-02 09:44:33 10HmbS-0005vi-00 "should freeze this" not first delivery
-1999-03-02 09:44:33 10HmbS-0005vi-00 => userx <userx@test.ex> R=user_accept2 T=appendfile
-1999-03-02 09:44:33 10HmbS-0005vi-00 Completed
-1999-03-02 09:44:33 End queue run: pid=pppp -qqff -R userx