[Bug 1126418] [NEW] Mailman sort patch

[Jared Mauch]

Public bug reported:

When using sendmail, you can see suboptimal performance.  While there
are some tweaks that can be done, eg: adjusting SMTP_MAX_RCPTS, you can
also see a significant performance gain by sorting by domain.

I have been using this patch privately since at least 2004 and wanted to
share it to be included in future releases if feasible.

There is a second part of it that also adjusts the chunk map which can
either be incorporated or excluded as well.

This will put folks who are @gmail.com all together when handed to
sendmail (for example) instead of interspersed in some other ordering.

One can argue the MTA should do this, but this is a light-weight
approach to optimally utilize resources if the MTA doesn't handle it
properly.

** Affects: mailman
     Importance: Undecided
         Status: New

** Patch added: "sort by domain before handing to SMTP handler"
   https://bugs.launchpad.net/bugs/1126418/+attachment/3530304/+files/mailman.patch

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https://bugs.launchpad.net/bugs/1126418

Title:
  Mailman sort patch

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