subscriber with colon in address can't be removed

[Kiwimonster]

We are running Mailman 2.1.4 on debian.

Somehow, one of our lists wound up with an improperly
formatted address like this:

   mailto:<email address hidden>

The list administrator is not able to remove this
member from the web interface. When I attempt to
remove them with remove_members, I get this traceback:

Traceback (most recent call last):
  File "./remove_members", line 186, in ?
    main()
  File "./remove_members", line 176, in main
    admin_notif, userack)
  File "/var/lib/mailman/Mailman/MailList.py", line
954, in ApprovedDeleteMember
    self.removeMember(emailaddr)
  File
"/var/lib/mailman/Mailman/OldStyleMemberships.py", line
220, in removeMember
    self.__assertIsMember(member)
  File
"/var/lib/mailman/Mailman/OldStyleMemberships.py", line
113, in __assertIsMember
    raise Errors.NotAMemberError, member

From reading rfc822, it looks like colon is not an
allowed character in an email address.

[http://sourceforge.net/tracker/index.php?func=detail&aid=1180872&group_id=103&atid=100103]

[Kiwimonster (kiwimonster)]

Incidentally, an easy way to fix this problem is to dump the
membership to a file with list_members, modify the file to
remove the improperly formatted address, and then use the
file with sync_members. I usually do sync_members -n to see
what changes it's going to make first.

Of course, it would be ideal for Mailman to not allow bad
characters in the email address in the first place.