MailScan 5.50a question and small problems

[axel]

Yesterday I installed MailScan for Mailservers 5.50a over my old 5.30a.

1. It changed at least one setting:
Advanced Content Options "Send Original Mail to User Also" was changed from enabled to disabled.

2. When finding SURBL at Microworld blacklist it quarantines the mail, when finding SURBL at multi.surbl.org it deletes the mail. With old 5.30a mails where only quarantined.
How can I change to only quarantine the mail?
BTW. when disabling SURBL, MailScan still checks SURBL. (MailScan.ini: SURBL=0)

3. A problem already discussed with Swapnil is still unsolved:
When retrieving mails from a domain mailbox via POP3, MailScan seems not able to find the original receiver (Envelope-To, X-Envelope-To,...) it sends error messages always to postmaster.