Sort of depends on what you are looking for.  There are some domains that have a catch all, so may not go to the specific address you mail to.<br><br>What are you wanting to accomplish with this?  If you want to know if you can send mail to a specific domain, you can open a socket to the domain on port 25 (assuming you have outbound port 25 available to you from your location).<br>
<br>If you want to know if a specific email address is available, you can try to send an email to the address, and note the response code after sending it.  Using php, you can use the mail() function, however, the error message it returns is binary in nature, either it sends or not, without a real reason why it failed to send.<br>
<br>-- Dan.<br><br><div class="gmail_quote">On Tue, Sep 7, 2010 at 6:09 PM, AZ RUNE <span dir="ltr">&lt;<a href="mailto:arizona.rune@gmail.com">arizona.rune@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
For quicky help <a href="http://dirtsearch.org" target="_blank">dirtsearch.org</a>, .com something like that<br><br>Brian<br><br><div class="gmail_quote"><div><div></div><div class="h5">On Tue, Sep 7, 2010 at 6:07 PM, keith smith <span dir="ltr">&lt;<a href="mailto:klsmith2020@yahoo.com" target="_blank">klsmith2020@yahoo.com</a>&gt;</span> wrote:<br>

</div></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div></div><div class="h5"><table border="0" cellpadding="0" cellspacing="0">
<tbody><tr><td style="font: inherit;" valign="top">
<br>I would like to verify email addresses to verify if the actually exist.  I seem to recall doing a reverse lookup.  Is that possible?  I would like to do this in PHP if possible.  Google returns no real help.<br><br>Thanks in advance.<br>

<br>------------------------<br>
Keith Smith</td></tr></tbody></table><br>

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