Ok so I did some digging and picked up some things. Namely, sieve and the ability to download/upload rules to Mac Lion Server's webmail filter section.
1. So the "Recipient" selection only generates "To:" in the sieve rules. If you download the filter set and edit the text file, expand that "To:" to read "["To","Cc","Bcc"]" if you want to cover all recipient fields
2. If you want to list multiple addresses from the web interface, it's best to add a separate rule for each; otherwise, the web interface will generate as one long string to check against and won't work (e.g. "email@address1.com, email@address2.com").
Alternatively, edit the sieve text file to read "["email@address1.com","email@address2.com"]" and upload the filter set again.
3. After uploading edits like #1, you'll notice the web interface uses the "[...]" setting and lists "To,Cc,Bcc" in the next field. Basically, this setting allows you to enter any header-relevant area to check against.
The message body cannot be filtered on from the web interface with this setting so that reason. The body is a separate area from the header.
According to the documentation I found (see links), a statement in the sieve text file like this should work:
require ["body", "fileinto"];
# Save messages mentioning the project schedule in the
# project/schedule folder.
if body :text :contains "project schedule" {
fileinto "project/schedule";
}
I haven't gotten this to work yet though as the upload strips it out. I also tried "body :content "text"", but same result. I don't think you can filter on the message body in Mac Lion Server rules.
Links:
https://help.apple.com/advancedserveradmin/mac/10.7/#apd064E313D-D961-441E-82C4- C023BDD9E3CA
https://en.wikipedia.org/wiki/Sieve_%28mail_filtering_language%29
https://tools.ietf.org/html/rfc5173
