[Mimedefang] $SuspiciousCharsInHeaders

[David F. Skoll]

Hi, Vincent.

On 21 Feb 2002, Vincent Jaussaud wrote:

> Here you go. :-)

[And sent a gzipped version of the message]

The message contained the following header:

X-Mailer: SMRmail - ^_tiscon AG Infosystems^M^J

where "^_" is the ASCII character 0x1F.  Here's an excerpt of the
octal dump:

0001400 61 69 6c 20 2d 1f 74 69 73 63 6f 6e 20 41 47 20
         a  i  l sp  - us  t  i  s  c  o  n sp  A  G sp

It is that control character which upset MIMEDefang.  Control
characters like 0x1F are legal in mail headers according to
RFC2822, so I will loosen up the tests to look for embedded NUL's and
CR's only.

Regards,

David.