NOD32 for FreeBSD Mail Server + Postfix

I'm using NOD32 for FreeBSD Mail Server 2.70.3, FreeBSD 6.1 and Postfix 2.3.4.1 in the test environment
Changes in NOD32 config file:
listen_addr="0.0.0.0"
listen_port= 2526
server_addr = "localhost"
server_port= 25

Trying to test:
telnet localhost 2526
I see:
Escape character is ...

220 katbert,zpp.local ESMTP Postfix

I do NOT see server's HELO
Mail client can't sent mail to port 2526

I uninstall NOD32 and install 2.52.2
I have done same changes in config - and all works!

Any ideas?

 

Comments:

Changes in the [SMTP] section of config:
agent_enabled=yes
listen_addr="0.0.0.0"
listen_port= 2526
server_addr = "localhost"
server_port= 25