5 janeiro 2020,

How to check if the email address exists

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To how to make a good email address if individual entered mailbox.does.not.exist @webdigiapps. com really exists undergo the observing in command prompt on home windows/ incurable on macintosh. The commands you enter reside in eco-friendly and also the hosting server feedback resides in blue. Please refer to MAC & & COMPUTER screenshots towards completion of this post.

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


nslookup -q= mx webdigiapps.com

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 –- Currently we know the email server address therefore let our company hook up to it. You can link to one of the exchanger deals within the feedback from Step 1.


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


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

Escape character is – ^] ‘.

220 homiemail-mx7. g.dreamhost.com ESMTP


helo hi


250 homiemail-mx8. g.dreamhost.com


mail coming from: <


250 2.1.0 Ok


rcpt to: <


550 5.1.1 : Recipient address denied: User unknown in virtual alias desk




221 2.0.0 Bye

Screenshots –- MAC COMPUTER Terminal & & Windows


  1. the 550 action shows that the email handle is actually certainly not legitimate and you have actually caught a valid however inappropriate email deal with. This code can be on the hosting server as well as called on AJAX when consumer buttons out of the email field. The entire check will definitely take lower than 2 seconds to run as well as you can make sure that the email is actually right.
  2. If email existed the server will definitely respond witha 250 as opposed to 550
  3. There are actually certain hosting servers along witha CATCH ALL email and also this means all email deal withare allowed as authentic on their web servers (RARE but some hosting servers do possess this environment).
  4. Please carry out not use this technique to continually to check email for availability of gmail/ yahoo/ msn accounts etc as this may cause your Internet Protocol to be included in a blacklist.
  5. This is to muscle building supplement the typical email handle javascript validation.

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