[Mimedefang] Apostrophes escaped in "To:" address

[G. Roderick Singleton]

On Thu, 2003-10-09 at 16:59, David F. Skoll wrote:
> On Thu, 9 Oct 2003, Keith Dowell wrote:
> 
> > Hmm - I always was under the impression that an apostrophe was an invalid
> > character. (Yet I just tested it on a linux box and if I add the user with
> > quotes I can put it in... but why).
> 
> According to RFC 2822, the following addresses are legal:
> 
> 	<%!#$'?@domain.net>
> 	<"@ @ @@@!!!_@$#$#$%*&#$(&@#&^!!+++"@domain.net>
> 
> Read it if you don't believe me. :-)
> 
> These addresses are not likely to be handled correctly by a lot of
> software, but they are technically OK.  Many Sendmail installations, for
> example, will choke on something with a "%" in it.
> 

You forgot to mention that '%', '!', and '@' are routing directives in
sendmail. So I'm uncertain why you would think sendmail would choke.
E.g. gerry%pathtech.org at roaringpenguin.com is a valid address but
whether or not roaringpenguin relays it is another question. Is this why
you say choke?

-- 
Gerry Roderick Singleton <gerry at pathtech.org>
416-452-4583