I struggled a bit with figuring out how to specify the from email address when sending mail on the Linux command line. In short, you need to use the -r option. For example:echo "Enter your message here. Thank you." | mail -s "Enter your subject here" -r
Related Articles
Setting Up SPF on Zimbra Runni...
SPF is awesome for stopping delivery of spoofed spam and junk back-scatter, but many of the articles on how to set up SPF in Zimbra are old and out-of-date. It...
Nginx - How to Block or Redire...
I've been figuring out how to block or redirect web traffic in Nginx based on the country geoIP. NOTES* You need the package nginx-extras for this because this...
KVM - Enable Direct PCI Pass-T...
This example was done on Ubuntu server.* Enable VM direct I/O in the BIOS.* Open /etc/default/grub using an editor like nano or something.* Find GRUB_CMDLINE_LI...
Elastix PBX - Voicemail Disabl...
I ran a yum update process on my Elastix PBX, updating all the packages. The update process completed without error; however, voicemail was disabled on all use...