Email address check function

[Gerrit Holl]

Hello,

I'm writing some CGI scripts and I want the user to fill in their real email
address. Checking this is more difficult than just look if it contains an '@'.
There must be at least one '.' after the '@' but there must be non-'@' chars
before and after every '.', no white space, etc. There must be an RFC for
this, but is there a function in the standard library that checks if it's
OK?

I very often get messages from my MTA that it's received a message with a
wrong Message ID. One could also type an entirely wrong email address in the
form, and I want to attend the user on that.

regards,
Gerrit.

-- 
"The world is beating a path to our door"

  -- Bruce Perens, (Open Sources, 1999 O'Reilly and Associates)
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