check email

How to test if the email handle exists

Source Web Link

To email address look up if user entered into mailbox.does.not.exist @webdigiapps. com really exists go throughthe complying within command cause on home windows/ incurable on macintosh. The commands you input are in green as well as the web server reaction resides in blue. Satisfy refer to MAC COMPUTER & & COMPUTER screenshots in the direction of the end of this blog post.

Step 1 –- Locate email exchanger or even mail hosting server of webdigiapps.com

COMMAND:

nslookup -q= mx webdigiapps.com

RESPONSE:
Non- reliable response:

webdigiapps.com email exchanger = 0 mx2.sub3.homie.mail.dreamhost.com.

webdigiapps.com email exchanger = 0 mx1.sub3.homie.mail.dreamhost.com.

Step 2 –- Now we understand the mail web server address therefore permit us connect to it. You may link to some of the exchanger addresses in the feedback coming from Step 1.

COMMAND:

telnet mx2.sub3.homie.mail.dreamhost.com 25

RESPONSE:

Connected to mx2.sub3.homie.mail.dreamhost.com.

Escape personality is actually – ^] ‘.

220 homiemail-mx7. g.dreamhost.com ESMTP

COMMAND:

helo hi

RESPONSE:

250 homiemail-mx8. g.dreamhost.com

COMMAND:

mail coming from: <

RESPONSE:

250 2.1.0 Ok

COMMAND:

rcpt to: <

RESPONSE:

550 5.1.1 : Recipient address refused: Customer unknown in virtual pen names table

COMMAND:

quit

RESPONSE:

221 2.0.0 Bye

Screenshots &ndash;- MACINTOSH Terminal &amp; & Windows

NOTES:

  1. the 550 feedback signifies that the email handle is certainly not valid and also you have actually recorded a legitimate however wrong email address. This code could be on the hosting server and also called on AJAX when individual tabs away from the email field. The whole check will certainly take less than 2 seconds to manage as well as you can make sure that the email is actually correct.
  2. If email appeared the server will respond along witha 250 as opposed to 550
  3. There are actually specific web servers along witha CATCH ALL OF email as well as this suggests all email address are actually taken as legitimate on their web servers (RARE but some servers carry out possess this setting).
  4. Please perform certainly not utilize this technique to consistently to check email for schedule of gmail/ yahoo/ msn profiles etc as this might induce your IP to be contributed to a blacklist.
  5. This is to enhance the basic email address javascript validation.