We (email@example.com -> me & DaveM) got just reports that
somebody is diverting incoming email to some sort of auto-responding
The thing does not carry original message "Received:" headers in replies,
and is reporting invalid URL.
Independent of that, people with supposedly working addresses
are sometimes bouncing:
1) because their backup MXes don't like the domain they have
(configuration problem somewhere, you can choose in between
the DNS data writer, and the backup MX admin)
2) that ISP's system is for some reason loosing track of
part of their user database.
Couple days ago SGI.COM had apparently lost its external
system primary alias file for a few hours... I have seen
similar blunders here and there, cisco.com had blunder
that some months ago too. -- things vary, but usually
we refrain from deleting recipients if "a bit too many"
are bouncing from some big site...
3) some ISP systems yield 500 series errors with text:
"system is temporarily busy"
or something of that effect. Now THAT is really offensive
stupidity by the ISP software folks...
For the subset 1 above, I am preparing to begin to run regularly
(weekly very least, daily possibly) scanner which tries interactive
testing of recipients address at all of user's domain's MX servers,
and if any of the MX systems for user's domain gives a bad
response for subscriber's address, that user gets the log report
and some pointers on what to do.
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This archive was generated by hypermail 2b29 : Mon Oct 23 2000 - 21:00:15 EST