[Mailman-Users] DNS error behaviour with DMARC

Jim Popovitch jimpop at gmail.com
Thu Aug 28 17:27:13 CEST 2014

On Wed, Aug 27, 2014 at 11:54 AM, Jeff White <jaw171 at pitt.edu> wrote:
> 2. What is Mailman's behaviour if the query fails (e.g. times out)?

The msg is passed through as if there was no DMARC check.  (Yes, it's
known that it is possible for a miscreant to DDoS domain.tld's DNS
servers and then send you an email From domain.tld)

> ... but what happens to the post when DNSException is thrown?

Same as above.

> If someone can point me to the file that holds this code I can review it and
> report what the behaviour is.

It's in Mailman/Utils.py

Any and all improvements, suggestions, criticisms, etc. are welcome.

-Jim P.

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