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The meaning of the Acronym 550 is...
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HTTP Error Codes
550
550 is
Mailbox Unavailable
550 is also in:
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Acronym Definition Searched:
QFF
WMWR
95D
USMZ
BT
GSS
CPRS
SPASDS
CSAP
PALS
BHT
TKT
48340
FUTDE
STEPS
