From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.user/4800 Path: news.gmane.org!not-for-mail From: "Bruno Hertz" Newsgroups: gmane.emacs.gnus.user Subject: Re: Migrating IMAP (nnimap) servers? Date: Thu, 31 Mar 2005 16:15:19 +0200 Organization: Cablecom Newsserver Message-ID: References: <87sm2cyhs3.fsf@cenderis.demon.co.uk> <87d5tg9leg.fsf@cenderis.demon.co.uk> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1138670692 24917 80.91.229.2 (31 Jan 2006 01:24:52 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 31 Jan 2006 01:24:52 +0000 (UTC) Original-X-From: nobody Tue Jan 17 17:34:20 2006 Original-Path: quimby.gnus.org!newsfeed1.e.nsc.no!uio.no!feed.news.tiscali.de!newsfeed.freenet.de!newsfeed.inode.at!news.hispeed.ch!not-for-mail Original-Newsgroups: gnu.emacs.gnus Original-NNTP-Posting-Host: 80-218-17-54.dclient.hispeed.ch Original-X-Trace: news.hispeed.ch 1112278484 3404 80.218.17.54 (31 Mar 2005 14:14:44 GMT) Original-X-Complaints-To: news@hispeed.ch Original-NNTP-Posting-Date: Thu, 31 Mar 2005 14:14:44 +0000 (UTC) User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) Cancel-Lock: sha1:ALWG9XeTjlF5ySNVnEY3Y2MPRJM= Original-Xref: bridgekeeper.physik.uni-ulm.de gnus-emacs-gnus:4941 Original-Lines: 40 X-Gnus-Article-Number: 4941 Tue Jan 17 17:34:20 2006 Xref: news.gmane.org gmane.emacs.gnus.user:4800 Archived-At: Bruce Stephens writes: > "Bruno Hertz" writes: > > [...] > >> I'm not totally sure, so additional comments are welcome, but afaik >> all the marks Gnus maintains locally for news are stored as imap >> flags on the server, like read, seen, ticked and even dormant (might >> depend on your Gnus version, though). So just switching servers >> should go alright without further actions in this regard, if the >> flags are migrated, too. > > That sounds hopeful. > >> What I'm not sure about is what to do with possibly cached articles. >> Maybe somebody else can tell more? > > I've not used those (with imap, anyway). I'd guess that there'd be an > issue with those---presumably it uses some kind of numbering, and > presumably that's the server-specific article number. Actually, thinking about it, you don't even need to 'switch', since your mail servers are (presumably) part of your secondary select methods. I.e. you could just add the new server there, subscribe to your folders when it's online and see what it gives. If the old server is down by then, Gnus will put it offline anyway, and you could remove it from your secondary selects then or maybe even kill the subscribed folders one by one and then kill resp. remove the server. So yes, I'm pretty sure it should be no problem, especially when the migration is done properly on the server side. Finally, if you're concerned about loosing mail on the server side, you could pull it before migration yourself to either maildir format (fetchmail, procmail - don't know what happens with the flags in this case though) or even to another imap server of your choice (mailutil from uw-mailutils). Regards, Bruno.