is_valid_email returns different values for same input

mailgun / flanker

Python email address and Mime parsing library

http://www.mailgun.com

Apache License 2.0

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is_valid_email returns different values for same input #220

Open jbenghiat830 opened 5 years ago

jbenghiat830 commented 5 years ago

calling is_valid_email on the same email address which is known to be valid returns True and False for different executions. There does not seem to be a pattern that causes the different output.

horkhe commented 5 years ago

This behavior is probably a result of DNS queries for the domain MX records returning inconsistent results. You can confirm that by running command dig MX <domain-name> a few times on the host where the check is failing.