Change Mail Server or Qmail ip in Plesk

2013-05-16T00:09:05+00:00

SSH in to your server console and let’s look at your setup: # /sbin/ip route 1.2.3.4/1 dev eth0 proto kernel scope link src 1.1.1.1 1.2.3.4/16 dev eth0 scope link default [...]

Change Mail Server or Qmail ip in Plesk2013-05-16T00:09:05+00:00

How to Block or Prevent SYN Floods Attack

2013-05-11T19:23:08+00:00

Hardening your TCP/IP Stack Against SYN Floods Denial of service (DoS) attacks launch via SYN floods can be very problematic for servers that are not properly configured to handle them. [...]

How to Block or Prevent SYN Floods Attack2013-05-11T19:23:08+00:00

Linux High Cached Memory Usage

2013-05-11T19:11:10+00:00

sync; echo 3 > /proc/sys/vm/drop_caches echo "vm.drop_caches = 3" >> /etc/sysctl.conf" sync Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that [...]

Linux High Cached Memory Usage2013-05-11T19:11:10+00:00

Configure SPF and DKIM for Google Apps

2022-09-12T16:52:25+00:00

Configure SPF for Google Apps Sender Policy Framework (SPF) is an email-validation system used to prevent spam or spoofed emails from coming into your inbox. SPF is a TXT record [...]

Configure SPF and DKIM for Google Apps2022-09-12T16:52:25+00:00

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