Inside the mind of a young IT Professional
To enable root logins via SSH on a Cobalt RAQ, edit /etc/ssh/sshd_config and change “PermitRootLogin” to “yes”.
I needed to do this to allow Plesk to login to our old servers during the big migration, as it can’t login as admin, then su to root 
If you have SpamAssassin installed and see “Can't locate Mail/SPF/Query.pm in @INC...” in your error logs, you need to install Mail::SPF::Query.
SpamAssassin uses SPF to detect header and email-source forgery – very important in determining if e-mail is legitimate or not.
To install Mail::SPF::Query, run these commands as root:
perl -MCPAN -e shell
install Mail::SPF::Query
If you haven’t yet added SPF records to your DNS, you can find out more at the Sender Policy Framework site
In GnuPG, if you get an error saying “There is no assurance this key belongs to the named user” when trying to encrypt, you need to sign the public key.
You can sign the key by typing “gpg --sign-key user-id” at the command prompt.
Footnote: I came across this whilst migrating our e-commerce system to a new server. The system uses GnuPG to encrypt the order/credit card information and then emails it to our sales team. I’m making sure I document the process fully, so that I don’t have to spend so much time figuring this stuff out again! 
Phil is an IT Professional working at DisplayLink in Cambridge, England. He generally blogs about useful solutions that he comes across in his work/play.
