snmptd not receiving traps in trap monitor log shows Rejected! Community not in list

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• CA Unified Infrastructure Management On-Premise (Nimsoft / UIM)
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)

Issue/Introduction

Forwarding traps from juniper firewall , however the snmptd probe is not collecting the trap from it. 
Traps are getting received in Wireshark on the same server where the snmptd probe is installed.

snmptd.log errors:

Nov 20 10:41:25:640 [13620] snmptd: (DecodeV2Trap) - Matched second varbind to .1.3.6.1.6.3.1.1.4.1.0 (Good V2 trap). 
Nov 20 10:41:25:640 [13620] snmptd: (DecodeV2Trap) - Get trapId from snprint_value - .1.3.6.1.2.1.15.7.2 
Nov 20 10:41:25:644 [13620] snmptd: (DecodeV2Trap) - trapDescr - SNMP v2 TRAP 
Nov 20 10:41:25:644 [13620] snmptd: Rejected! Community not in list 
Nov 20 10:41:25:646 [13620] snmptd: Rejected! Community not in list 
Nov 20 10:41:25:646 [13620] snmptd: (DecodeV2Trap) - Matched second varbind to .1.3.6.1.6.3.1.1.4.1.0 (Good V2 trap). 
Nov 20 10:41:25:646 [13620] snmptd: (DecodeV2Trap) - Get trapId from snprint_value - .1.3.6.1.2.1.15.7.2 
Nov 20 10:41:25:650 [13620] snmptd: (DecodeV2Trap) - trapDescr - SNMP v2 TRAP 
Nov 20 10:41:25:650 [13620] snmptd: Rejected! Community 

Environment

• DX UIM, any version
• snmptd probe, any version
• network device monitoring
• SNMPv2c
• traps

Cause

• Incorrect/missing community string

Resolution

The issue is related to an incorrect/missing community string value.

In snmptd probe gui config under Security Properties

1. Confirm if the community string related to this device is present or not.
    If present, double-check the correct community string spelling. This is in the probe settings under Security manager > Community tab.

    Please note that the community string is case-sensitive as well. 

2. Add an "*" (asterisk) in the community string for testing purposes.

https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/ca-unified-infrastructure-management-probes/GA/monitoring/networking-infrastructure/snmptd-simple-network-management-protocol-trap-daemon-monitoring/snmptd-im-configuration.html#concept.dita_ee2349c6e6eef8a5c07df9e642a875491c6eabb7_ManageUserandSecurity
Can specify the following security aspects: 

Community: The SNMP-TRAP v1 contains community strings. Here you can specify the incoming traps that the snmptd probe accepts. 
Normally, the community string Public is used. A * (or no community string at all) means that all incoming traps are accepted.