Recently we had a small issue with a client that couldn’t configure her Email to work on her Telstra enabled blackberry.

This is how we solved the issue:

Symptoms:

When adding the POP / IMAP account through the blackberry website she was presented with:

An error occurred during email account validation

The reason for this was due to CSF on the email server being configured.

You need to allow the blackberry infrastructure address ranges in your CSF.allow (located in /etc/csf/)

These are the addresses:

To enable this, just add the CIDR ranges through the following command:

csf -a {CIDR RANGE}

Example:

csf -a 67.223.64.0/19

Then disable and re enable CSF

csf -x; csf -e;

You should now be able to connect your blackberry service!

Enjoy!

Karl.