CODEWITHSUNDEEP
pythonemail-validation
Akhil Mathew
Akhil Mathew

Reputation: 1659

Checking of whether email exist or not, only works for gmail accounts, others not working

I am creating a python function to check whether a given email ID really exists or not in Python. Here is my code:

def email_validate(email_address):
    addressToVerify = email_address
    domain_name = addressToVerify.split('@')[1]
    try:
        records = dns.resolver.query(domain_name, 'MX')
    except Exception as e:
        print e
        a = traceback.format_exc()
        print a
        return HttpResponse(json.dumps({"success":False,"message":"Email Domain is not valid."}), content_type="application/json")

    mxRecord = records[0].exchange
    mxRecord = str(mxRecord)

    server = smtplib.SMTP()
    server.set_debuglevel(0)

    # SMTP Conversation
    server.connect(mxRecord)
    server.helo(host)
    server.mail('[email protected]')
    try:
        code, message = server.rcpt(str(addressToVerify))
        server.quit()
    except:
        a = traceback.format_exc()

    if code == 250:
         return HttpResponse(json.dumps({"success":True,"message":"Email ID is valid."}), content_type="application/json")
    else:
         return HttpResponse(json.dumps({"success":False,"message":"Email ID is not valid."}), content_type="application/json")

This code works fine for Gmail accounts, but it gives an error for other email ID's. If I try other Email ID's, this line: 

code, message = server.rcpt(str(addressToVerify))

gives an error... Also, how should I check this for other email ID's?

Upvotes: 1

Views: 4579

Answers (2)

Zuzel Vera
Zuzel Vera

Reputation: 51

If you only need to check emails in your google domain for G Suite you can use these:

1) First you need to get the right credentials to be able to access data for the scope https://www.googleapis.com/auth/admin.directory.user.readonly -- https://developers.google.com/admin-sdk/directory/v1/guides/delegation#delegate_domain-wide_authority_to_your_service_account

2) Second you can use the service object created with these credentials to check if the email exists: https://developers.google.com/admin-sdk/directory/v1/quickstart/python

Upvotes: 0

user7870824
user7870824

Reputation:

An RCPT command is never a good idea to check for email validation, most SMTP servers will ban your IP after several attempts or ignore you command to keep their emails safe from spammers. The only way to validate an email existance is to send a validation email.

Upvotes: 6

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