Hi all, You probably know this already, but just in case... Let's say you have your email client getting mail from a Dovecot server on the same computer (which is a really good way of doing things, by the way). Then one day your email client starts saying "connection refused" after a suitably long timeout. So then, to find out where things are getting stuck, you do the following command: openssl s_client -connect 127.0.0.1:993 -quiet And you don't even get an OK back. This means it's not your username or password, because you never even got that far. Before spending a lot of time doing diagnostic tests and narrowing it to the root cause, try this as root: ifdown lo ifup lo A malfunctioning lo will cause Dovecot not to connect to clients. My experience with Debian Wheezy is that lo "goes down" a lot, so this is one of the first things I do when odd stuff happens. HTH, SteveT Steve Litt * http://www.troubleshooters.com/ Troubleshooting Training * Human Performance
Am 12.07.2014 13:31, schrieb Steve Litt:> ifdown lo > ifup lo > > A malfunctioning lo will cause Dovecot not to connect to clients. My > experience with Debian Wheezy is that lo "goes down" a lot, so this is > one of the first things I do when odd stuff happensuhm if you *loopback device* goes down your machine has a serious problem - within 15 years Linux expierience i never faced a broken "lo" device and i guess the same for 99.9999% of all admins -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 246 bytes Desc: OpenPGP digital signature URL: <http://dovecot.org/pipermail/dovecot/attachments/20140712/96095040/attachment.sig>
On 7/12/14, Steve Litt <slitt at troubleshooters.com> wrote:> experience with Debian Wheezy is that lo "goes down" a lot, so this is > one of the first things I do when odd stuff happens. >Use a better operating system then, I've used at work and home, suse, opensuse, rhel, centos, slackware and fedora, and never in my all my years of linux (I've used it since I was 14 and am mid twenties now) has loopback ever *gone away* unless i deliberately made it so.