Re: [apps-discuss] Mail client configuration via something, maybe WebFinger

Doug Royer <> Wed, 10 February 2016 19:10 UTC

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From: Doug Royer <>
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Date: Wed, 10 Feb 2016 12:10:49 -0700
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Subject: Re: [apps-discuss] Mail client configuration via something, maybe WebFinger
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On 02/10/2016 11:18 AM, John Levine wrote:

> PS:
>> That ISP considers the 'preferred' service IMAP.
>> You can connect with IMAP, but get no email if you expected the free
>> service.
> We definitely can't cure stupid.

Different issue. They provide 2 services POP-free and IMAP-pay, and
DNS/SRV has no way to do smart 'preferred'. (per user again)

If they make IMAP preferred, then their free users get no email.

If they make POP preferred, then their pay users get told to use POP and
not the IMAP they pay for.

RFC 6186:

section 3.4,  " ...When an MUA supports both IMAP and POP3, it SHOULD
retrieve records for both services and then use the service with the
lowest priority value. ..."

  and first paragraph on page 2

"...  The priority field of the SRV record can also be used to indicate
a preference for one message store access protocol over another. ...

For users that upgrade, would have to manually update their MUA.

I would hope that a configuration standard would allow for update data
that does not tell them to use the wrong store/port.

They choose the option that makes their per-users happy.


Doug Royer - (http://DougRoyer.US)