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adding tls support to validate_email #99

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adding tls support to validate_email #99

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e7ad936
added support for secure connections.
Sep 25, 2019
7ea1a69
change default from True to False to provide backward compatibility
Sep 25, 2019
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11 changes: 10 additions & 1 deletion validate_email.py
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Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ def get_mx_ip(hostname):
return MX_DNS_CACHE[hostname]


def validate_email(email, check_mx=False, verify=False, debug=False, smtp_timeout=10):
def validate_email(email, check_mx=False, verify=False, debug=False, check_tls=False, smtp_timeout=10):
"""Indicate whether the given string is a valid email address
according to the 'addr-spec' portion of RFC 2822 (see section
3.4.1). Parts of the spec that are marked obsolete are *not*
Expand Down Expand Up @@ -140,6 +140,15 @@ def validate_email(email, check_mx=False, verify=False, debug=False, smtp_timeou
return MX_CHECK_CACHE[mx[1]]
smtp = smtplib.SMTP(timeout=smtp_timeout)
smtp.connect(mx[1])
if check_tls:
try:
smtp.starttls()
except RuntimeError:
# no ssl in python. So simply ignore
pass
except (smtplib.SMTPException, smtplib.SMTPResponseException):
# failed to establish secure connection
return False
MX_CHECK_CACHE[mx[1]] = True
if not verify:
try:
Expand Down