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Split MXes into inbound and outbound
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Description

mx1001/mx2001 are currently serving both as inbound (for wikimedia.org etc. mail) and as an outbound smarthost (for both system emails, and "wiki" mail). These are fundamentally different needs and merging them into one role can be a little tricky and has resulted into bugs in the past such as DKIM signing of inbound emails, for instance.

Since these are VMs anyway, it should be relatively straightforward to split the two roles. Setting up mx1002/mx2002 with the same config as a first step should be easy, and then as a second step modifying the config to strip out redundant configuration statements in exim4 and puppet (e.g. running spamd in the outbound ones).

The logical split will be beneficial for Labs' email too (T174608) and both of these tasks can probably be addressed in one go (but in multiple steps, of course).

Event Timeline

faidon created this task.Sep 8 2017, 1:05 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptSep 8 2017, 1:05 PM
herron moved this task from Backlog to Up Next on the Mail board.Sep 18 2017, 1:21 PM
Aklapper removed herron as the assignee of this task.Jun 19 2020, 4:20 PM
Aklapper added a subscriber: herron.

This task has been assigned to the same task owner for more than two years. Resetting task assignee due to inactivity, to decrease task cookie-licking and to get a slightly more realistic overview of plans. Please feel free to assign this task to yourself again if you still realistically work or plan to work on this task - it would be welcome!

For tips how to manage individual work in Phabricator (noisy notifications, lists of task, etc.), see https://phabricator.wikimedia.org/T228575#6237124 for available options.
(For the records, two emails were sent to assignee addresses before resetting assignees. See T228575 for more info and for potential feedback. Thanks!)