validate-email.py

#Why: Verify email box exists
#Author: Bruno da Silva Valenga - <brunodasilvalenga.com.br>
#Created: 08/25/2014
#Usage: script.py [email protected]
#Install lib DNS: https://github.com/rthalley/dnspython

import socket, smtplib, re, sys, dns.resolver                                                             
                                                                                                          
addressToVerify = sys.argv[1]                                                                             
match = re.match('^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$', addressToVerify)
                                                                                                          
domain = addressToVerify.split("@")[1]                                                                    
                                                                                                          
if match == None:                                                                                         
        print('Bad Syntax')                                                                               
        raise ValueError('Bad Syntax')                                                                    
                                                                                                          
records = dns.resolver.query(domain, 'MX')                                                                
mxRecord = records[0].exchange                                                                            
mxRecord = str(mxRecord)                                                                                  
                                                                                                          
# Get local server hostname                                                                               
host = socket.gethostname()                                                                               
                                                                                                          
# SMTP lib setup (use debug level for full output)                                                        
server = smtplib.SMTP()                                                                                   
server.set_debuglevel(0)                                                                                  
                                                                                                          
# SMTP Conversation                                                                                       
server.connect(mxRecord)                                                                                  
server.helo(host)                                                                                         
server.mail(addressToVerify)                                                                              
code, message = server.rcpt(str(addressToVerify))                                                         
server.quit()                                                                                             
                                                                                                          
# Assume 250 as Success                                                                                   
if code == 250:                                                                                           
        print('Success')                                                                                  
else:                                                                                                     
        print('Bad')
 fiz uns ajustes pra receber a variavel apenas
 ai voce usa
 ./test-email.py [email protected]
 ou
 python test-email.py [email protected]