If our servers connected from Juniper ge-1/1/5 unit 0 and 47.74.19.98/32 is spam source-ip, then can reject/block/deny this from Juniper-Router as bellow
## Create filter rules
set firewall family inet filter spammer-ip term 32 from source-address 47.74.19.98/32
set firewall family inet filter spammer-ip term 32 then reject
set firewall family inet filter spammer-ip term 33 then accept
## Apply to interface
set interfaces ge-1/1/5 unit 0 family inet filter output spammer-ip
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