The following are the IP ranges for the email protection service systems. Note, for system 20 customers, both sets of IP ranges are applicable.
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64.18.0.0 - 64.18.15.255
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mask 255.255.240.0
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20, 200, 201
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207.126.144.0 - 207.126.159.255
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mask 255.255.240.0
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Your system number is shown the URL when you log in to the Administration Console or Message Center. The system number is prefaced by “ac-s” or “mc-s”, for example:
URL displayed for an account on System 8 when logged in to the Administration Console:
https://ac-s8.postini.com/exec/adminstart?
URL displayed for an account on System 200 when logged in to the Message Center:
https://mc-s200.postini.com/app/msgctr/junk_quarantine
Note: As of September 2004, the following IP ranges are no longer in use. It is safe to remove any mail server or router configurations to accept traffic from these ranges without impairing the email protection service connectivity.
12.158.34.0/24 (12.158.34.0 mask 255.255.255.0)
12.158.35.0/24 (12.158.35.0 mask 255.255.255.0)
12.158.36.0/24 (12.158.36.0 mask 255.255.255.0)
12.158.38.0/24 (12.158.38.0 mask 255.255.255.0)
12.158.39.0/24 (12.158.39.0 mask 255.255.255.0)
38.115.174.0/24 (38.115.174.0 mask 255.255.255.0)
63.240.161.0/24 (63.240.161.0 mask 255.255.255.0)