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midrange.com
This is a known issue with outlook express, as defined in the following
TechNote
* Title: POP3 Server Error: "Unable to Gain Exclusive
Access to Maildrop"
* Product Area: Domino Server Windows NT
* Product Release: Domino Server 4.6x
* Topic: Messaging & Mail \\ POP3
Document #: 170194
Last Update: 07/07/2000
(Document link: Database 'SIMS Documents', View '5. Info Mgmt & Dist
Guide\by Guideline Type', Document 'Circulation Field')(?)
Circulation: Published - This document is technically
verified and technically edited.
Problem:
A customer is connecting to the Domino server and retrieving their mail via
POP3 when they encounter a power failure or their machine crashes. The
customer is unable to re-establish the connection to the server. The
Domino server shows the following errors:
"xx/xx/xx 09:22:33 POP3 Server: Unable to open mail file for Joe
User/Support: unable to obtain exclusive access to maildrop
xx/xx/xx 09:22:33 POP3 Server: 9.95.50.105 disconnected"
The user is not able to complete the downloading of their mail messages
until this error is resolved.
Show Task indicates the Domino server believes that it is still 'Providing
Service for Joe User/Support'. Attempting to restart the POP3 server task
only results in the POP3 Server Control Task stopping.
Solution:
This issue was reported to Lotus Quality Engineering and has been resolved
in Domino 5.0.3.
Excerpt from the Lotus Notes and Lotus Domino Release 5.0.3 QMR fix list:
POP3 Mail Server
SPR# BACY45SGHG - Fix the POP3 error, "Unable to obtain exclusive
access to mail drop," by adding support for POP3 autologout. [5.0.3]
If a large number of messages requiring conversion to MIME had to be
downloaded, the R4 POP3 server converts every message during its response
to the PASS command. If the connection was broken, the server continues to
convert until all messages are converted. In Domino 4.6x, the only way to
resolve this issue is to restart the Domino server.
Supporting Information:
The POP3 protocol (RFC 1939) defines that the POP3 server must acquire an
exclusive access lock on the maildrop as necessary to prevent messages from
being modified or removed before the session enters the UPDATE state.
Related Documents:
Walter Scanlan
Advisory Software Engineer
Domino for AS/400 Team Leader
Phone 507-286-6088
Fax 507-286-5028
Internet wscanlan@us.ibm.com
"Shane D. Rowe at
HICI" To: <DOMINO400@midrange.com>
<srowe@hici.net> cc:
Sent by: Subject: Mail User problems
and Server Tasks
owner-domino400@mi
drange.com
05/23/2001 02:18
PM
Please respond to
DOMINO400
I have a user who has had trouble checking email with Outlook Express.
Each time there is a problem, the log files show "Unable to open mail file
for userid: Unable to obtain exclusive access to maildrop". What's going
on with the maildrop? This user has downloaded email several times, and
then it just stops working and that message is in the server logs. Note-
everyone uses Outlook Express for their email client as opposed to Notes.
Additionally, in Administrator on the "Server" tab, I see no tasks or
connected users. This tab should show me the different tasks running on
the Domino server, but they are just blank now. How do I correct this?
I need to know what to do about the mail user/maildrop issue and how to get
back the server tasks.
Thanks in advance,
Shane D. Rowe
Systems Specialist
Haulers Insurance Company, Inc.
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