The fact that it is naming a specific port
Cannot connect to Media Agent on system SMA-EVA, port 1265
makes me think that this is probably a firewall issue. Data Protector uses what is called Dynamic Port Addressing, which means, after the initial contact is nade through port 5555, DP will use any port available. If the Firewall is blocking that port, you will get a message similiar to what you are seeing
You need to get together with the Firewall administrator, and have him set a Firewall rule that allows DP to backup through a specific range of ports, probably about 30-40 will be sufficient. Lets say, for example, he is allowing ports 60001 -> 60030 to be used for backup
Edit the 'omnirc' file on the disk agent and add a line to use only this range of ports
OB2PORTRANGE=[start]-[finish]
Using my example
OB2PORTRANGE=60001-60030
Save the file. On Windows systems, you need to stop and restart the Data Protector INET service
This needs to be done on BOTH the Disk Agent and the Media agent systems. It does not have to be done on teh Cell manager unless it is also the media agent involved
In the GUI< click on Help -> List Topics, and search for OB2PORTRANGE for more information