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多項(xiàng)選擇題

Which three are necessary for antispam to function properly on a branch SRX Series device? ()(Choose three.)

A. an antispam license
B. DNS servers configured on the SRX Series device
C. SMTP services on SRX
D. a UTM profile with an antispam configuration in the appropriate security policy
E. antivirus (full or express)

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