The description of the Mail Server group of packages in the installer is bizarre -- "These packages allow you to configure an IMAP or Postfix mail server.". Should this read 'IMAP and/or SMTP', perhaps? Or 'Sendmail or postfix'? Which would be accurate -- for reasons unknown Exim isn't actually listed in this group as it should be.
Thanks for the pointer - description fixed.
Should I re-file the 'and excludes Exim' part against RHEL?