[Mailman-Developers] feature request: one-click setting to preserve DKIM

[Barry Warsaw]

On Jan 05, 2012, at 05:03 PM, Murray S. Kucherawy wrote:

>> Actually, I was asking about the default for personalized vs. non-
>> personalized delivery.  Right now, the default is to send all users the
>> same copy of the message (with some configurable batching sizes) in
>> order to reduce network bandwidth, i.e. non-personalized.  By switching
>> to personalization by default, we can enable VERP by default,
>> personalized footers, etc.  Personalization would allow for giving
>> users more choices about subject munging, footer adding, etc. but of
>> course it would consume more network bandwidth and server resources to
>> stitch together individualized messages.
>
>A little optimization is possible in that scenario, namely the cross product
>of all the possible munging options that the current subscriber list has
>enabled.  I don't know how easy or hard that might be to code in mailman, but
>I imagine it's possible.

Possibly, but it depends on the level of individualization.  If you're doing
VERP or personalized footers you pretty much have to send one message per
user.

-Barry