https://www.zabbix.com/integrations/snmp

SNMP definition is not correct. Currently the definition is of SMTP instead.

Definition should be along the lines of:

Simple Network Management Protocol (SNMP) is a networking protocol used for the management and monitoring of network-connected devices in Internet Protocol networks. The SNMP protocol is embedded in multiple local devices such as routers, switches, servers, firewalls, and wireless access points accessible using their IP address.