Mailing List Issues
jnewman at codeweavers.com
Thu Apr 6 10:33:58 CDT 2017
We have been having issues with bounces and people getting removed from
the list subscriptions as of late. It seems to mostly affect Gmail
users, but some others have been getting kicked as well. Gmail is
getting particularly picky about valid mail headers.
I'm looking into ways of preventing this from happening. I've done the
following to prevent further issues:
* Raise the bounce threshold in mailman to 10.0
* Add SPF record to DNS
* Add DMARC policy to DNS
* Add DKIM key signing to all outbound mail, and matching key in DNS
We also have been hitting our bandwidth threshold at our co-lo. When
this happens they start to drop packets on us as a form of throttling.
This always happens when I do a full CDN flush. As this really chews up
the bits when the mirrors re-sync.
To prevent that, we now have a background process watching for changed
files on our master, and only changes will be flushed.
If you notice any further issues, or have suggestions, let me know.
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