My largest mailbox is 12GB (280K messages).
If you aren't using the MIX format, you should. See
http://www.washington.edu/imap/documentation/mixfmt.txt.html
You can convert with mixcvt (*not* mailutil).
The mix format stores a mail folder in a directory, with individual
files no larger than a certain limit (except where a single message is
larger than the limit). Access & update will be incredibly faster, and
much less of a load on the system.
Mixcvt is a separate download, if I recall correctly.
If the 16GB mail file is in mbox format ("traditional Unix mail
format"), then I can imagine all kinds of problems.
If mixcvt can't deal with it, then you'll have to use something like
split, with hand editing to break it into manageable sizes and to break
between messages.
On 4/23/12 4:21 AM, Carlton T wrote:
Hi,
I have just joined the group, so forgive me if this problem has been
addressed before, I did search the archive with no success.
I have a client with a number of HUGE mailboxes, some in excess of 16
Gigs. As you can imagine, the server slows down to a crawl
when acessing these mailboxes. I am trying to use the mailutil's
prune option to remove messages from one of the 16 Gigs mailboxes, but
I get the error message "Can't open mailbox <mailbox_name>: no such
mailbox". However, if I perform the same operation against a mailbox
which is approx 4 Gigs, it completes successfully. I have done a
little debugging and noted that the error message is being generated
by the open_mail function within the module mail.c.
Has anyone else attempted this on such a large mailbox file? Is there
a limit on the size of mailbox file that can be handled by mailutil?
Am I wrong in assuming that the problem is related to the size of the
file?
Any help/pointers greatly appreciated.
--
Carlton
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