🚀 go-pugleaf

Remy Lebeau (TeamB) wrote:
> "Mark Jacobs" <http://www.jacobsm.com/mjmsg?Borland%20Newsgroup>
> wrote in message news:4471afcd$1@newsgroups.borland.com...
>
>> How do I go about validating both the username and
>> domain name parts of an email address?
>
> You would have to use a DNS lookup to get the MX records of the
> domain.  The MX records contain the IP addresses of the domain's SMTP
> servers.  You would then have to connect to each server, issuing a
> VRFY command to each one, until one of them reports success.  Do
> note, however, that some servers dsable the VRFY command,
> unfortunately.

Thanks. I found out that our server does not support the VRFY command, and 
I'm wondering what proportion of SMTP servers do? I also note that some act 
as relays to *any* request from anywhere (I won't publish the host of one in 
particular  :-) ). In my experience, there is still no guaranteed way of 
validating an email address, because, just this luch-time, the DNS server 
was timing out, as our execs played a LAN shoot 'em up! That's difficult to 
program for, unless you know their "timetable" in advance. ;-)
-- 
Mark Jacobs
http://jacobsm.com