Convert Maildir to mbox
题
Im changing hosts and i need to convert my maildir accounts on my old server to mbox on my new server.
Any ideas on the best way to do this?
I found this:
for i in new/* cur/*;do formail <”$i” >> ../mbox;done
But i dont really understand it. I have a basic knowledge of linux and I have root access to my server via ssh.
most of the Maildir folder have the following contents:
cur
new
tmp
dovecot.index.log
dovecot-uidlist
dovecot.index
dovecot.index.log.2
dovecot.index.cache
dovecot-keywords
subscriptions
Do i need all of that or can i ignore the dovecot files?
Any advice would be greatly appreciated.
C
解决方案
If you have access to both servers via imap (or can temporarily arrange it), you might want to consider using an imapsync tool, eg:
http://freshmeat.net/projects/imapsync/
If that won't work, you should be able to ignore the dovecot files, but beware that you'll likely lose information like which messages are read and any flags set on the messages. (The imapsync method would preserve all those things.)
其他提示
If one needs to convert a maildir account into a mailbox account without setting mailservers, one can use the mailbox library of python. If one has a single maildir folder to convert, one can use this small (10 lines+comments) python script found here. If one has subfolder, one needs to explore the subfolder structure, which is different between the two formats. This gives the following script :
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Frédéric Grosshans, 19 January 2012
Nathan R. Yergler, 6 June 2010
This file does not contain sufficient creative expression to invoke
assertion of copyright. No warranty is expressed or implied; use at
your own risk.
---
Uses Python's included mailbox library to convert mail archives from
maildir [http://en.wikipedia.org/wiki/Maildir] to
mbox [http://en.wikipedia.org/wiki/Mbox] format, icluding subfolder.
See http://docs.python.org/library/mailbox.html#mailbox.Mailbox for
full documentation on this library.
---
To run, save as md2mb.py and run:
$ python md2mb.py [maildir_path] [mbox_filename]
[maildir_path] should be the the path to the actual maildir (containing new,
cur, tmp, and the subfolders, which are hidden directories with names like
.subfolde.subsubfolder.subsubsbfolder);
[mbox_filename] will be newly created, as well as a [mbox_filename].sbd the
directory.
"""
import mailbox
import sys
import email
import os
def maildir2mailbox(maildirname, mboxfilename):
"""
slightly adapted from maildir2mbox.py,
Nathan R. Yergler, 6 June 2010
http://yergler.net/blog/2010/06/06/batteries-included-or-maildir-to-mbox-again/
"""
# open the existing maildir and the target mbox file
maildir = mailbox.Maildir(maildirname, email.message_from_file)
mbox = mailbox.mbox(mboxfilename)
# lock the mbox
mbox.lock()
# iterate over messages in the maildir and add to the mbox
for msg in maildir:
mbox.add(msg)
# close and unlock
mbox.close()
maildir.close()
#Creates the main mailbox
dirname=sys.argv[-2]
mboxname=sys.argv[-1]
print(dirname +' -> ' +mboxname)
mboxdirname=mboxname+'.sbd'
maildir2mailbox(dirname,mboxname)
if not os.path.exists(mboxdirname): os.makedirs(mboxdirname)
listofdirs=[dn for dn in os.walk(dirname).next()[1] if dn not in ['new', 'cur', 'tmp']]
for curfold in listofdirs:
curlist=[mboxname]+curfold.split('.')
curpath=os.path.join(*[dn+'.sbd' for dn in curlist if dn])
if not os.path.exists(curpath): os.makedirs(curpath)
print('| ' +curfold +' -> '+curpath[:-4])
maildir2mailbox(os.path.join(dirname,curfold),curpath[:-4])
print('Done')