New MailScanner Front-End (MSFE) v7.15

Changes:

• MailControl: Added icon next to IP addresses to block in csf
• MailControl: Added MailControl setting for the csf block reason text
• MailControl: Added custom header records to released emails to easily identify them:
  X-MailControl: release forward
  X-MailControl: release resend
• MailControl: Add report line for spam RBL hits
• MailControl: Client IP in Email view clickable to Search