I got information about the mail flows (from the technician managing the BlackBerry phones):
Message --> Send from an account on our server ---> to a mailbox at O2 (cell phone provider) ---> and from there directly to the phone What I not understand is why messages are checked for spam overall ? My assumption is that SpamAssassin checks only INCOMING mails, but not the outgoing ones. Strange. By the way, we are using a combination of Postfix/Cyrus/amavisd-new/SpamAssassin to handle mails (on a Mac OS X Server 10.4.x). Maybe you have an idea where to start checking and what. The problem is that I cannot get hands on a mail header for thorough investigation, because when the mail arrives the phone, it doesn't provide access to the entire mail header. And the O2 mailbox... I don't know. Seems that this is just used as transit mailbox without a way to access it. So I need to guess a bit. Tobias.
