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[Aaron Wells <1261231@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Mahara has a VERP system to identify users whose emails are bouncing,
and disable sending to their email address. It uses a $cfg->bounceprefix
setting to generated the VERP address; this is the part of the email
that comes before the VERP stuff.

Currently, it arbitrarily forces this prefix to be exactly 4 characters,
but there doesn't appear to be a reason for this, except that the
process_email() function contains a lot of calls to substr() with hard-
coded offsets that assume the prefix is exactly 4 characters.

I want to change this so that the prefix can be any length. The reason
for this, is so I can use "verp+" as the prefix, which in our mail
system will forward them all to the "verp[at]mahara.org" mailbox. And
that will make it very easy for us to configure the IMAP-based bounce
handling system.

** Affects: mahara
     Importance: Low
     Assignee: Aaron Wells (u-aaronw)
         Status: In Progress


** Tags: email verp

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https://bugs.launchpad.net/bugs/1261231

Title:
  Allow a VERP "bounceprefix" that's not exactly 4 characters

Status in Mahara ePortfolio:
  In Progress

Bug description:
  Mahara has a VERP system to identify users whose emails are bouncing,
  and disable sending to their email address. It uses a
  $cfg->bounceprefix setting to generated the VERP address; this is the
  part of the email that comes before the VERP stuff.

  Currently, it arbitrarily forces this prefix to be exactly 4
  characters, but there doesn't appear to be a reason for this, except
  that the process_email() function contains a lot of calls to substr()
  with hard-coded offsets that assume the prefix is exactly 4
  characters.

  I want to change this so that the prefix can be any length. The reason
  for this, is so I can use "verp+" as the prefix, which in our mail
  system will forward them all to the "verp[at]mahara.org" mailbox. And
  that will make it very easy for us to configure the IMAP-based bounce
  handling system.

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