[ingo] Migrating from procmail to sieve

[Arjen de Korte]

After migrating from procmail to sieve for server side filtering, I  
noticed some rules where not working anymore. The majority was working  
fine, but a handful no longer did. It took me a while to find out that  
the misbehaving rules had trailing whitespace, which is ignored in  
procmail recipes but is used in sieve. Only after checking the sieve  
script, I noticed my error.

Best regards, Arjen