At 10:30 PM -0700 12/2/2005, Ben Parker wrote:
>On Thu, 1 Dec 2005 16:29:24 -0500, KMF-MIS <[EMAIL PROTECTED]> wrote:
>
>>It might also help (at least the subscribers) if the list bounce processor
>>was a little smarter. The reason currently given in the e-mail for unsubbing
>>a subscriber when spam cop is in play is incorrect, if the bounce processor
>>looked at the enhanced status code (RFC 1893) in the bounce message and
>>unsubbed 5.1.1 but not 5.7.1 this would allow time for the least to get off
>>spam cop or for the subscriber to white list the particular mail server being
>>listed.
>
>This won't help. Looking at the mail server logs shows that most of the
>affected users are getting auto-deleted from the list because the receiving
>site returns a 550 (no such user) error code during the SMTP transaction/
>delivery attempt. SMTP error codes are intended to be 'definitive' and
>LISTSERV does not attempt to 'second-guess' them.
RFC 821 seems to indicate that a 550 doesn't mean "no such user", it means
" 550 Requested action not taken: mailbox unavailable
[E.g., mailbox not found, no access]"
As I mentioned, RFC 1893 defines enhanced status codes, one of which indicates
no such user
> >Plan B might be for the bounce processor to not unsub people if the bounces
> >to a particular address have stopped. I have bounced list messages with a
> >spam cop filter, white listed the server and started receiving messages
> >again and then been unsubbed one or more days later even tho I was no longer
> >bouncing list messages.
>
>LISTSERV has 2 alternate criteria for determining when to delete. The first
>criteria is total number of (permanent) bounce errors (all temporary error
>bounce codes are discarded). The second criteria is a pattern of repeated
>bounces over some period of time. For WIN-HOME these are criteria are Max
>50 bounces and/or bounce every day for 4 days.
4 days gives plenty of time for the server to be white listed or the server to
be removed from the BL, 50 bounces could happen in a couple of hours if the
list is particularly active giving no chance for corrective action to be taken
>The fact always is that if your ISP/mail system responds to sending SMTP
>servers that your email address does not exist, when in fact it does, then
>you will likely not receive some legitimate mail, not only List mail, but
>other mail. As a user of that mail system you probably should be concerned
>about this enough to let your ISP/mail system admins know how you feel about
>that.
Is the list always sent via 209.119.0.21, or can it be sent via one of many
servers? If multiple servers, can you supply a list of their addresses?
Thanx
_____________________________________________________________
MIS Department
Kubota Metal Corporation (705) 325-2781 x322
25 Commerce Road Fax (705) 325-5887
Orillia, Ontario L3V 6L6 Web <http://www.kubotametal.com>
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