From: Bill Cole (postfixlists-070913billmail.scconsult.com)
Date: Wed Jan 16 2008 - 00:09:12 CST

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

At 4:10 PM +1100 1/16/08, MacShane, Tracy wrote:
>
>
>> -----Original Message-----
>> From: owner-postfix-userspostfix.org
>> [mailto:owner-postfix-userspostfix.org] On Behalf Of Mihira Fernando
>> Sent: Wednesday, 16 January 2008 10:55 PM
>> To: postfix-userspostfix.org
>> Subject: Re: [OT] Saving outgoing email Gmail style
>>
>>
>> Is this true for POP3 for mail retrieval and SMTP for mail
>> relaying setup in the MUA ? Cause that's what happening with Gmail.
>> And you don't need a IMAP aware MUA to see this happening. It
>> works with any MUA that can submit the email via SMTP.
>> In fact if you use Postfix to relay mail via Gmail (you need
>> a sender dependent authentication setup) , you'll see the
>> same thing happening.
>>
>> BTW arn't 'CREATE user/Sent' and 'COPY' IMAP commands ?
>>
>
>Yes, I don't know enough about POP to talk about the commands.

That's pretty clear...

POP3 has no concept of multiple folders associated with one login ID,
and no standard (or widely implemented) mechanism for a MUA to hand a
message to the server. It is designed solely for one-way traffic: the
MUA retrieving mail from the POP3 server. There is no way for a MUA
to tell a POP3 server to add a message to a mailbox and a POP3 only
shows a MUA a mailbox as a simple flat list of messages. All
organization of mail received via POP3 into distinct collections is
purely done by the MUA after retrieval, and does not exist in the
POP3 server.

Note that the GMail feature of dropping messages submitted via SMTP
into "Sent Mail" predated their support of IMAP and works even with
simple SMTP submission by hand (i.e. 's_client' as MUA... )

> I also
>don't know what Gmail is using in the backend. Anyway, the point remains
>that it's the MUA that does all that message moving around stuff.

Not so. See my prior message.

--
Bill Cole
billscconsult.com

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]