Posted by Janwillem Borleffs on 11/22/05 22:05

David Cary Hart wrote:
> I am working on an Apache/MySQL/PHP application that sends email to a
> third party. I want to ensure that the form originator is providing a
> valid email address. From the command line, I would:
> telnet domain.tld 25
> HELO mail.tqmcube.com
> MAIL FROM: test@tqmcube.com
> RCPT TO: user@domain.tld
> That will either provide OK or an error message.
>
> Can someone clue me in if I might be able to do this within php?
>

You can use fsockopen + fputs & fgets for this, but be aware that most SMTP
servers reply OK even when the address isn't valid.


JW

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