Skip to content

Instantly share code, notes, and snippets.

@stefanocoding

stefanocoding/does_email_address_exist.py

Last active June 8, 2019 15:01
Show Gist options
  • Save stefanocoding/547b7836d73009f3dbb1223cbbe97d07 to your computer and use it in GitHub Desktop.
Save stefanocoding/547b7836d73009f3dbb1223cbbe97d07 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. stefanocoding revised this gist Feb 23, 2019. No changes.
  2. stefanocoding revised this gist Feb 23, 2019. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions does_email_address_exist.py
    View file
    Original file line number Diff line number Diff line change
    @@ -1,4 +1,5 @@
    #!/usr/bin/python3
    # Example usage: ./does_email_address_exist.py twitter.com jack
    import argparse
    from smtplib import SMTP
    import dns.resolver
  3. stefanocoding created this gist Feb 23, 2019.
    24 changes: 24 additions & 0 deletions does_email_address_exist.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,24 @@
    #!/usr/bin/python3
    import argparse
    from smtplib import SMTP
    import dns.resolver

    parser = argparse.ArgumentParser()
    parser.add_argument('hostname')
    parser.add_argument('user')
    args = parser.parse_args()

    hostname = args.hostname
    user = args.user

    mx_records = dns.resolver.query(hostname, 'MX')
    server = str(mx_records[0].exchange)

    with SMTP(server, local_hostname=hostname) as smtp:
    smtp.helo()
    smtp.docmd('mail from: <[email protected]>')
    code, text = smtp.docmd('rcpt to: <'+user+'@'+hostname+'>')
    if code == 550:
    print('it does not')
    else:
    print('it does exist')