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>>>>> "BC" == Brian Christensen <BCCHRISTENSEN@novell.com> writes:
BC> Is there a comprehensive listing anywhere describing causes and
BC> solutions to error messages of the following format:
Um, no, because these problems are for the most part totally unrelated to
each other, and there is generally nothing that you as a list or Majordomo
administrator can do about any them. But, just so you know...
BC> 420 TCP read error
Probably due to an overloaded but not throttled network. The initial
connection was made but the transaction was not completed.
BC> 450 MX lookup failure
Could not find the MX (Mail eXchanger) DNS record for the target host.
BC> 450 Host down
Obvious, I think.
BC> 451 System Problem
Not so obvious; could be any of a large list of problems... I mean a
tremendously large list.
BC> 550 Host unknown
Another DNS issue, this time the IP address of the target host could not be
retrieved. This and the MX lookup failure are related in that there are a
number of reasons for the failure ranging from network lossage to bogus DNS
data.
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--
Rich Pieri <rich.pieri@prescienttech.com> | Do not use Happy Fun Ball on
Prescient Technologies, Inc. | concrete.
A Stone & Webster Company |
I speak for myself, not PTI or SWEC |
References:
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