NBA 5260 FLEX OS 6.1 NBU v. 11 and DR emails

Hello,

I am trying to get working emails for hot catalog backup. Unfortunately it is not working. In previous releases it was working. Not sure if I am doing something wrong, or missing some part of configuration. So the hot catalog policy has the recipient set, on NBU gear icon I did configure alerts and notification settings... But no dr related emails are coming in...

When I am running /usr/openv/netbackup/bin/mail_dr_info.sh with needed switches I am getting the following:

[root@master bin]# pwd
/usr/openv/netbackup/bin
[root@master bin]# ./mail_dr_info.sh email@exampleaddress.com TestSubject mail_dr_info.sh  mail_dr_info.sh
s-nail: Cannot start /usr/sbin/sendmail: executable not found (adjust *mta* variable)
/root/dead.letter 55/1688
s-nail: ... message not sent
[root@master bin]#

Anyone has an idea what I am missing here?

NBU is in version:

[root@master bin]# cat /usr/openv/netbackup/version
HARDWARE LINUX_RH_X86
VERSION NetBackup 11.0
RELEASEDATE Mon Mar 10 18:39:55 CDT 2025
BUILDNUMBER 0055

 

Running on NBA5260 FLEX OS 6.1.