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Dec
20
comment unable to ssh into local host
If shell is valid check UsePrivilegeSeparation. I've seen this cause issues as well.
Dec
20
comment sendmail only relaying messages bound for one specific domain
Relay-domains is what you want. Put your companies name in there and disable all other relaying.
Dec
20
answered sendmail only relaying messages bound for one specific domain
Dec
20
answered Best way to protect public DNS against attackers
Dec
20
answered What alternatives to 'find' are there which will work in a cron environment in the rackspace cloud?
Dec
20
answered password-less ssh works to connect to one user on a remote machine but not another
Dec
20
answered What are my options for centralizing Unix user management
Dec
20
answered Giving other users write access to apache logs can result in root exploit - How does this work?
Dec
20
answered How to prevent bombardment of hack attempts on VPS
Dec
20
comment Replacing Hard Drives
The major issue I've seen is vibration. I know of a dedicated server provider that used to put towers on metal racks. The racks bow in the middle. The servers vibrated significantly and touched each other. We saw a 10x higher than expected drive failure rate. At the facility were trash cans full of disks. When the same facility moved to proper rack mounts this failure rate declined.
Dec
19
awarded  Good Answer
Dec
19
awarded  Mortarboard
Dec
19
awarded  Nice Answer
Dec
19
answered Replacing Hard Drives
Dec
19
comment Adding multiple A records for same host for backup purpose
Given your new question, I think we will need more details. What risk are you trying to mitigate with an HA solution? Power failure, network, web application, etc. requires different solutions.
Dec
19
answered DNS Not Resolving For All Users
Dec
19
comment Graphical Ping utility with logging
Would have to second this recommendation.
Dec
19
answered Updating OpenSSH to latest stable version via yum
Dec
19
comment Deploying git repo on production server without account password
Not sure if it will work in your use case, but check into using SSH-Agent to cache the passphrase for the ssh key.
Dec
14
answered Permission, apache user and www folder in Linux