Re: [libreoffice-users] Too many messages on this mailing list?? How to avoid being swamped ...

At 16:51 19/10/2015 -0400, Charles Marcus wrote:
> On 10/18/2015 6:44 PM, Brian Barker wrote:
> > At 15:27 17/10/2015 -0700, James E. Lang wrote:
> > > POP3 is a protocol that downloads the messages to you without 
> > > leaving a copy on the server.
>
> > What gives you this mistaken impression?
>
> It isn't mistaken, it is fact.

Sorry, but it's not a fact.

> Yes, the POP3 protocol was later amended to provide for optional 
> capabilities like leaving messages on the server, ...

So you are saying it's not a fact but it's nevertheless true? There 
must be a name for style of argument where you claim something to be 
false and promptly explain that it is true! It's certainly not logic. 
(And there's no "later" involved: the sole protocol mentioned was POP3.)

POP3 has RETR to retrieve a message and *separately and optionally* 
DELE to delete the server copy. Even the original POP had the 
alternatives RETR to read messages and RDEL to read them and delete 
them - so there is no "later" about it.

> ... and most clients have such options, ...

If you see above, you will see that the claim was about the protocol, 
not clients that may use it. That claim - that Post Office Protocol 
cannot leave copies on servers - was the only (untrue) claim I 
described as mistaken.

> ... but this is error-prone, ...

Again, the point was not about advisability of using POP.

In the early days of use of the POP protocol, server space would have 
been at a premium and no doubt common and necessary practice was for 
clients to be configured to delete server copies of messages when 
they were downloaded. But that doesn't mean that "POP3 ... downloads 
... without leaving a copy on the server."

POP: https://tools.ietf.org/html/rfc918
POP3: https://tools.ietf.org/html/rfc1939

Brian Barker  


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