On Fri, 28 Sep 2012 12:19:21 -0700, Brad Jorsch
<[email protected]> wrote:
On Fri, Sep 28, 2012 at 11:00:08AM -0700, Jeff Green wrote:
The change should not be noticeable, but the most likely problem
would be legitimate @wikimedia.org mail being treated as spam. If
you hear of this happening please let me know.
Anyone who sends all mail marked as "from"[1] their @wikimedia.org
address through Gmail's SMTP server, through an SMTP server hosted by
Wikimedia (is there one?), or through any other server identified in the
SPF record should be fine. And anyone who isn't sending "from" an
@wikimedia.org address should be entirely unaffected.
If anyone is sending mail marked as "from" their @wikimedia.org address
through some other SMTP server (e.g. through their home ISP), they might
start to see trouble with this change and likely will when the SPF
record is changed to ~all.
Also, any recipient who has their mail forwarded might have trouble
*receiving* messages from @wikimedia.org addresses, unless their
forwarding service takes SPF into account or their destination mailbox
doesn't check SPF. OTOH, these people would have the same problem with
receiving mail from all the other domains that currently implement SPF.
[1]: There are actually two concepts of "from" involved in email. The
first, the "envelope sender" or "mail from", is the address that
bounce notifications should be sent to. The second is the address
that actually shows up as "From:" in the email message. SPF is
intended to target only the former, but SenderID hijacks the SPF
specification to also test the latter.
And to make things all fun and confusing. We shouldn't forget about the
Sender: header...
**mumbles about AWS-SES not supporting Sender:**
--
~Daniel Friesen (Dantman, Nadir-Seen-Fire) [http://daniel.friesen.name]
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