Tag Archives: error

How to Recover Deleted Pictures or Files – Data Recovery Tools and Techniques

… computer and start the recovery. Data Loss Prevention What can I do to prevent data corruption or data loss? Enable in BIOS and on the hard-drive S.M.A.R.T. This is a software utility embedded on the hard-drive that will detect when too many error corrections are occurring. Whenever this happens it means that you drive is near an imminent failure and you should backup/replace it. If a message of a hard drive error appears, stop using your computer until you change the drive. You can use the …

Scalix Administration – Useful Commands

error: spamassassin –lint restart spamd /etc/init.d/spamd stop and then /etc/init.d/spamd start Check bounces email on Postfix tail -f /var/log/mail | grep NOQUEUE Troubleshoot sending or receiving Check the ldapmapper and make sure it’s working. /etc/init.d/ldapmapper status /etc/init.d/ldapmapper stop /etc/init.d/ldapmapper restart Check the sendmail daemon – make sure it’s working. ps aux |grep sendmail You should see two things: Accept connection and Queue control …

Troubleshoot a Slow Network – The entire Network is Slow

… cascaded device is not connected on two ports on the wall, (usually the ports on the wall go to the network room). Your cascaded switch makes a loop into the upper level switch. Bad Network Configuration DNS issues can cause a lot of slowdowns. One common error is to use your ISP’s DNS server inside your Active Directory network. Your Active Directory computer members will try to resolve internal names by querying your ISP’s DNS. Those records don’t exist outside of your …