+ # RFC 2822 comments cannot contain specials and
+ # unquoted () or \; there's no reason for us to allow
+ # insane things here, though, so we restrict this even
+ # more to 20-7E ( -~)
+ $reason =~ s/\\/\\\\/g;
+ $reason =~ s/([\)\(])/\\$1/g;
+ $reason =~ s/[^\x20-\x7E]//g;