From owner-freebsd-questions@FreeBSD.ORG Mon Jun 21 17:20:22 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3388E16A4D2 for ; Mon, 21 Jun 2004 17:20:22 +0000 (GMT) Received: from internet.potentialtech.com (h-66-167-251-6.phlapafg.covad.net [66.167.251.6]) by mx1.FreeBSD.org (Postfix) with ESMTP id EB7F443D5D for ; Mon, 21 Jun 2004 17:20:07 +0000 (GMT) (envelope-from wmoran@potentialtech.com) Received: from working.potentialtech.com (pa-plum1c-102.pit.adelphia.net [24.53.179.102]) by internet.potentialtech.com (Postfix) with ESMTP id 401EF69A39 for ; Mon, 21 Jun 2004 13:20:07 -0400 (EDT) Date: Mon, 21 Jun 2004 13:20:06 -0400 From: Bill Moran To: questions@freebsd.org Message-Id: <20040621132006.2b1a296f.wmoran@potentialtech.com> Organization: Potential Technologies X-Mailer: Sylpheed version 0.9.10 (GTK+ 1.2.10; i386-portbld-freebsd4.9) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: What's the best possible email failover solution X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jun 2004 17:20:22 -0000 Hey, I know questions like this get asked a lot, but I'm going to be really specific. I know how to set up failover with a backup MX. That's not what I'm looking for. We have a cyrus-imap server with lots of users connecting via IMAP, while everything gets backed up, this only happens once a night. Thus, if the server were to go up in smoke right before the backup occurred, we'd lose something like 23 hours worth of emails. Does anyone have a solution to provide real-time mirroring of IMAP folders? I don't mind manual intervention to get the thing running again, I just want to ensure that if an email is received, it's on both machines and can't get lost. Is there a way to get real-time replication of cyrus (I'm no cyrus guru, another fellow set this up) I'm not tied to Cyrus either, if there's another solution, I'd be happy to implement it. I have an idea ... by using Dovecot with PostgreSQL storing the actual mail folders, with Slony installed to provide real-time replication of the Postgres database ... I don't know if Dovecot is able to store the actual mail folders in Postgres yet, though ... Anyone? -- Bill Moran Potential Technologies http://www.potentialtech.com