home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!ux1.cso.uiuc.edu!moe.ksu.ksu.edu!mccall!ipmdf-newsgate!list
- Newsgroups: vmsnet.mail.pmdf
- Subject: Options for dealing with Mail-11 delivery errors
- Message-ID: <01GSKLP8W26S8ZDVVS@camb.com>
- From: Bob Tinkelman <bob@camb.com>
- Date: 21 Dec 1992 09:22:48 -0400 (EDT)
- Organization: Cambridge Computer Associates, Inc.
- Return-Path: <epmdf@YMIR.CLAREMONT.EDU>
- Resent-Date: 21 Dec 1992 09:22:48 -0400 (EDT)
- Resent-From: epmdf@YMIR.CLAREMONT.EDU
- Errors-To: epmdf@YMIR.CLAREMONT.EDU
- Resent-Message-ID: <01GSKG80F74Y8WW5P0@INNOSOFT.COM>
- X-Vms-To: IN%"info-pmdf"
- X-Vms-Cc: TINKELMAN
- Mime-Version: 1.0
- Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
- Content-Transfer-Encoding: 7BIT
- Lines: 51
-
- This is a followup to my previous posting regarding problems with
- deliveries to the local channel failing due to one of the various
- problems with VMSmail and/or the Mail-11 protocol.
-
- We have the following situation. We used to have a set of large
- mailing list (some with several hundred entries). These used to be
- normal VMSmail distribution lists. We've changed them to be PMDF
- lists. We're having an unanticipated problem which may cause us to
- revert back, something I'd prefer not to do.
-
- There have always been occasional problems with these lists. However,
- the impact has changed since the changeover.
-
- Once, one list member on another node forwarded his mail to his
- secretary, who was on some of the same lists. This caused mail to
- hang when sending to the list. There have been other problems,
- probably not all caused by exactly the same situations.
-
- The following is my analysis/guess at our current situation. When a
- problem like the above occured before, the sender would be using MAIL
- interactively, MAIL would hang, and the user would eventually ^C. At
- that point he/she would figure that the mail had been actually sent,
- possibly noticing his/her own delivery had arrived, and would just go
- on about his/her business.
-
- Now, when the same situation occurs, the PMDF batch job is running
- mail/protocol=in_mailshr and it hangs. Either
- (1) PMDF recognizes the problem and aborts the delivery, or
- (2) the job hangs forever.
- [I'm not sure how often the first occurs. I've seen the second.]
-
- Following the second scenario, eventually I notice the hung batch job
- and abort it. If I forget to rename the problem queue entry, the
- situation repeats, and each time the message is delivered to the list.
- So people get multiple copies of the message. I suspect that the
- first case is happening also based on the number of cases of people
- reporting receiving many copies of the same message.
-
- My first question: Is my guess correct that PMDF will time out in
- certain cases (I think this is what you [Ned] posted in response to my
- first question) and treat the delivery as a `temporary failure',
- requeuing it for later?
-
- My second question: If that's the case, would it make sense for PMDF
- to provide an option for treating this case differently? At our site
- we'd prefer to get Postmaster involvement ASAP in cases like this,
- rather than waiting for user complaints about multiple deliveries.
-
- And my third question: Short of convincing the other VMS systems to
- run PMDF, are there any suggestions as to how we can deal with this,
- short of going back to VMSmail distibution lists?
-