PGP 10.3.2 MP3 doesn't handle outgoing messages

Hi,

PGP doesn't handle outgoing messages. While incoming mails are being decrypted correctly and messages moved to IMAP foldes (like "sent") are encrytped.

I re-installed the software, I deleted a mail service and configured it manually but without success. The logging doesn't show any encrypion activities.

What can I do?

iMac 2.8 GHz Intel Core Duo, 4 GB RAM, MacOS X 10.9.4, PGP 10.3.2 MP3

Thanks in advance
Wolfgang