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Re: [Imap-protocol] Re: IMAP capability for maximum APPEND message size?



Timo Sirainen wrote:
On Thu, 2005-11-24 at 06:22 -0800, Mark Crispin wrote:
  
On Thu, 24 Nov 2005, Timo Sirainen wrote:
    
Well, personally I don't see a need for it. If you're sending message
size in APPEND as a normal literal, the server can reject it
immediately. So it would be useful for literalplus only.
      
Yes, but shouldn't the client know that the server will reject such 
literals?
    

I just think this is very similar to out-of-quota and other similar
conditions and could be treated as being mostly the same problem. The
capability would only prevent one specific case, and a case which I
haven't before heard of being a problem to anyone.

  
You all are also overlooking the question of *administrative* limits. 
SMTP's SIZE verb is an *administrative* limit, not a technical limit.  I 
think that that we need something similar for IMAP.
    

What non-technical reasons do there exist to limit it?

For SMTP I think it's mostly to prevent abuse (intentional or
accidental), but with IMAP there are better ways to intentionally abuse
the server and accidentally storing a huge mail doesn't really bother
anyone, you'll only have less disk space/quota.
  
No it bothers customers I see more and more.
The only possible use case that I can think of is to prevent users from
unknowingly storing too large attachments to mails, but I haven't heard
of that being a problem.
  
that is a good one too

A++

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