[Mailman-Users] Problem putting space after header

[Ben.Edwards at chase.com]

I want to put a line of text in [] and a new line (or if
this is not possible a .) as a header for messages.  Have tried severel
things and either get two spaces or the message starts on the same line
as the dod (gave up trying to get space working so tried '.').  i.e. I get

[Remember to 'Reply to all' if you wish to post to list rather than
sender]
.

Video Tony was down to do this but I just spoke to him and he has had a
court case come up so cant come.

or

[Remember to 'Reply to all' if you wish to post to list rather than sender]
. Video Tony was down to do this but I just spoke to him and he has had a
court case come up so cant come.

when I want

[Remember to 'Reply to all' if you wish to post to list rather than
sender]
.
Video Tony was down to do this but I just spoke to him and he has had a
court case come up so cant come.

In fact I realy dont even want the dot but can live with this.

Any ideas, is there a newline control character I can put in the header
field to make this happen.

Ben