Re: FN-FORUM Email validation

date posted 15th January 2002 15:21

I'll assume you are OK with a simple syntax checker
for the first pass.

On the matter of wether they are deliverable:
You should be able to write something that parses the
list then uses some smtp delivery agent such as sendmail
lookup to do the MX and probe the address on SMPT port
for valid recipient on the first, and as is often the case now,
last hop. Not definative as the first hop may not be
just a relay and the address could bounce on further
hops, unless SMPT allows for recursive checks. Would
need to check into this further, but this should get
you going.

I once had a perl script that did this. I have forgotten
what it was called, but I would think it's out there on
the net somewhere in open source land. I have buzzed an
old acquaintence that I think wrote it to see if he is any
the wiser.

I thought it was called checkmail, but all I find is a POP
mailbox monitor by this name.



Stuart Darbyshire wrote:

> Hi
>
> I have a client who has a database of about 50 000 email addresses, I am
> assured they are all opt in and not Spam. that he has built-up over a few
> years. He needs to validate them before he starts an email campaign. Does
> anyone know of anyway of doing this other than sending a message to each one
> and waiting to see if it bounces?
>
> Stu
>
>
> Stuart Darbyshire
> Itex Digital Limited
> Suite 25
> Bridge House
> 181 Queen Victoria Street
> London
> EC4V 4DZ
> www.itexdigital.com
>
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