On Thu, 1 Jun 2006, Timo Sirainen wrote:
On Thu, 2006-06-01 at 07:45 -0400, Charles Marcus wrote:
Our business model (advertising industry) is such that our users exchange a lot of emails with attachments - most less than a megabyte, but some considerably larger. Consequently, I have been looking for a good, open source imap server that doesn't store multiple copies of the same attachment - but instead, stores a checksum, and whenever a message is stored with a duplicate attachment, the attachment is stored only once, and simply referenced by some kind of link to other emails.
We do this by mangling the mail during the submission, via MIMEDefang from Roaring Penguin, http://www.roaringpenguin.com/penguin/open_source_mimedefang.php action_replace_with_url(). The attachment is then spooled on the host and accessed with URL (http:). BTW, the filename is the SHA1 of the content
Bye,
-- Steffen Kaiser