Email blocked by b.barracudacentral.org barracudanetworks.com

The other day I moved the email accounts of a customer system to a new dedicated server, then I changed the DNS entries for the mail domains. I later received the following email:

Reporting-MTA: dns;example.org
X-Postfix-Queue-ID: D417F9C2389
X-Postfix-Sender: rfc822; somebody@example.org
Arrival-Date: Mon,  5 Nov 2012 19:45:00 +0100 (CET)

Final-Recipient: rfc822; sbd@else.org
Original-Recipient: rfc822;sbd@else.org
Action: failed
Status: 5.7.1
Remote-MTA: dns; mx1.briefhansa.de
Diagnostic-Code: smtp; 554 5.7.1 […]

By |November 7th, 2012|Email|Comments Off on Email blocked by b.barracudacentral.org barracudanetworks.com

playing with the network config

When changes are made to `/etc/network/interfaces` on a server system without physical or kvm switch access, it comes in handy to have a script that resets your network configuration to the previous state and restarts the networking in case of network connectivity loss.
Here is a little bash script that checks if it can reach a […]

By |November 2nd, 2012|Networking|Comments Off on playing with the network config