add more check

domain/miningmanager/mempool/transactions_pool.go

@@ -138,6 +138,11 @@ func (tp *transactionsPool) allReadyTransactions() []*externalapi.DomainTransact
 		if len(mempoolTransaction.ParentTransactionsInPool()) == 0 {
 			result = append(result, mempoolTransaction.Transaction().Clone()) //this pointer leaves the mempool, and gets its utxo set to nil, hence we clone.
 		}
+
+		if numOutsLessThanOneKas, isSpamming := isTXSpamming(mempoolTransaction.Transaction()); isSpamming {
+			log.Warnf("Filtered from allReadyTransactions transaction %s with %d outputs with less than 1 KAS", mempoolTransaction.TransactionID(), numOutsLessThanOneKas)
+			continue
+		}
 	}
 
 	return result

domain/miningmanager/mempool/validate_and_insert_transaction.go

@@ -2,6 +2,7 @@ package mempool
 
 import (
 	"fmt"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
 
 	"github.com/kaspanet/kaspad/infrastructure/logger"
 
@@ -16,6 +17,11 @@ func (mp *mempool) validateAndInsertTransaction(transaction *externalapi.DomainT
 		fmt.Sprintf("validateAndInsertTransaction %s", consensushashing.TransactionID(transaction)))
 	defer onEnd()
 
+	if numOutsLessThanOneKas, isSpamming := isTXSpamming(transaction); isSpamming {
+		log.Warnf("Rejected from mempool transaction %s with %d outputs with less than 1 KAS", consensushashing.TransactionID(transaction), numOutsLessThanOneKas)
+		return nil, nil
+	}
+
 	// Populate mass in the beginning, it will be used in multiple places throughout the validation and insertion.
 	mp.consensusReference.Consensus().PopulateMass(transaction)
 
@@ -63,3 +69,14 @@ func (mp *mempool) validateAndInsertTransaction(transaction *externalapi.DomainT
 
 	return acceptedTransactions, nil
 }
+
+func isTXSpamming(transaction *externalapi.DomainTransaction) (int, bool) {
+	numOutsLessThanOneKas := 0
+	for _, output := range transaction.Outputs {
+		if output.Value < constants.SompiPerKaspa {
+			numOutsLessThanOneKas += 1
+		}
+	}
+
+	return numOutsLessThanOneKas, numOutsLessThanOneKas > len(transaction.Inputs)
+}