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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:
NO
SII
VSA
WLZM
PDSA
PIC
WFZ
ESM
ARM
52318
CAV
MT
NARC
SIDP
PBP
