I've followed the Perfect Server setup for Debian 7 with Dovcot... https://www.howtoforge.com/perfect-server-debian-wheezy-apache2-bind-dovecot-ispconfig-3 In the last three weeks, I've seen complete system lockup...OTHER THAN RECEIVING MAIL. I can't connect with ssh, ftp, browser, Thunderbird, MYSQL, etc until I do a hard reboot at the machine. Looking back at the logs, the machine is still receiving email...I just can't connect to the server to retrieve the email it's receiving. Looking at the syslog, I'm seeing some of these while the machine is locked up...but not while it IS accessible: Sep 16 14:01:01 mail /USR/SBIN/CRON[29215]: (root) CMD (/usr/local/ispconfig/server/cron.sh 2>&1 | while read line; do echo `/bin/date` "$line" >> /var/log/ispconfig/cron.log; done) Sep 16 14:01:01 mail /USR/SBIN/CRON[29214]: (root) CMD (/usr/local/ispconfig/server/server.sh 2>&1 | while read line; do echo `/bin/date` "$line" >> /var/log/ispconfig/cron.log; done) I'm also seeing this while it's NOT available...but not while it IS accesible: Sep 16 14:35:25 mail kernel: [409079.840301] r8169 0000:01:00.0: eth0: link up Sep 16 14:35:28 mail kernel: [409082.848316] r8169 0000:01:00.0: eth0: link up Sep 16 14:35:48 mail kernel: [409103.040300] r8169 0000:01:00.0: eth0: link up Sep 16 14:35:51 mail kernel: [409106.048301] r8169 0000:01:00.0: eth0: link up Sep 16 14:35:54 mail kernel: [409108.992348] r8169 0000:01:00.0: eth0: link up I would understand why the machine isn't accessible if the network is down...but why can I still receive mail...but not login to RETRIEVE the email that's been received...or login with SSh or any other service? Thanks!
cron.sh and server.sh should run each minute, they are used to run the server part of ISPConfig. If the network is down, then it's down and you cannot connect or receive mails. If you receive mails, then the network isn't down, but there is another problem...
