Luca Zancan writes:
Thank you Sam, everything is clear now: my message surely exceed largely 300 MIME sections.Only a last question: is this limit hardcoded in Courier IMAP or can it be modified?
It's in the code, it cannot be modified.
Luca Il 18/03/2013 23.40, Sam Varshavchik ha scritto:Luca Zancan writes:Good evening,I'm using a Courier-IMAP server since many years without any problem, but today I've noticed a sort of "visualization limit" of the attachments included in a message: this message contains 298 attachments, but my IMAP clients (both Thunderbird and Roundcube) can see only 30 attachments.I know that the message contains all the attachments, because I can download it by POP3 and I get again all the 298 attachments.The curious thing is that the IMAP client says that the message has 30 attachments and its size is 448 KB, while the message has 298 attachments and its size is 4.1 MB: I mean that also the size is interpreted in a wrong manner by IMAP client.My question is: is this a limit of Courier-IMAP or a limit of IMAP protocol itself?Are there solutions or is a sort of hard-coded limit?Courier-IMAP has a limit of 300 MIME sections, and a maximum of 20 levels of nested MIME sections.One key difference between IMAP and POP3, is that mail processing with IMAP is done on the server side, while POP3 is really nothing more than a very simple mechanism to download entire messages, with all processing shifted over to the client side.Since IMAP is a shared server resource, reasonable limits must be placed on each IMAP server process, for the obvious reasons. 300 MIME sections per message is a reasonable limit.If you need so many attachments, zip them together into a single file, or something.
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