[Info-vax] bizarre SMTP problem

[Arne Vajhøj]

Steven Underwood wrote:
> "Bob Eager" <rde42 at spamcop.net> wrote in message 
> news:176uZD2KcidF-pn2-PXhqF33pn2BN at rikki.tavi.co.uk...
>> Then it appears to be a bug, since '+' is perfectly valid as a character
>> in an email address, as per RFC 2822 section 3.4.1.
> 
> That may be, but there are lots of systems that do not honor plussed 
> addressing.  My mail provider (SpamCop.net) allows for plussed 
> addressing but many web based systems find those addresses to be 
> illegally formatted.

The regex expressions used to check for valid email addresses
are not always that well thought out.

Arne