Re: POP3 Connector Issue
From: Chris (anonymous_at_discussions.microsoft.com)
Date: 03/20/04
- Next message: Christian: "RE: outlook 2003"
- Previous message: Chris F: "Re: POP3 Connector Issue"
- In reply to: Chris Puckett [MSFT]: "Re: POP3 Connector Issue"
- Next in thread: MikeMc: "Re: POP3 Connector Issue"
- Messages sorted by: [ date ] [ thread ]
Date: Sat, 20 Mar 2004 00:21:40 -0800
Chris: I also have the same problem. This DF number will
always decrease down to 28 below the MTU setting.
ex.., When my router is set at 1500, clean ping occurred
at 1472. On advice from another link with the same issue
(POP3 Connector Errors 1019, 1023, and 1035) I changed my
router (DI-804HV brand new) down to 1472. Now when I run
the ping, I get a good ping at 1444 - also 28 less. Just
for kicks, I moved the MTU on the router to 1470. Guess
what the good ping number was...1442 (28 less). We are
barking up the wrong tree here I think.
I can't imagine that we are the only three with this
problem. I also have SB2003, maybe 2 weeks old. Mine is
still under test. I have 2 mailboxes setup and the error
alternates with each one. The errors do not always
occur. It occasionally skips the 15 minute interval. One
time it was an 1:15.
Thanks ahead of time.
Chris
>-----Original Message-----
>We have seen these events caused by mismatched MTU's. In
some cases it can
>resolved by adjusting the MTU on the router used to
connect to the internet
>or in other cases you can modify the MTU on the server.
>
>As a test, try running the following command. You can
replace the pop
>server name with the ones that you receive the events
connecting to.
>
>ping -f -l 1472 mail.smcusa.biz
>
>See if this pings or returns "packet needs to be
fragmented but DF set".
>If it returns the second message, then adjust the 1472
value down (in
>increments of 10 for instance) until you find the largest
value that pings.
> If you can ping through with 1472, then the MTU is not
likely to be the
>cause. However, you can still check the MTU value in the
registry of the
>server to see if it has been set to a value higher than
1500. If the MTU
>value does not exist in the registry then the server
defaults to the MTU
>for media you are connecting with which is most likely
1500.
>
>If you receive a request timed out, that server may not
respond to pings.
>I experienced this when trying to ping pop.earthlink.net.
>
>
>
>Once you know the largest value that pings, you can
manually set the MTU in
>the registry of the server using the following steps:
>
>If you need to do this on your router, please refer to
it's documentation
>for adjusting/setting the MTU.
>
>1. Click Start, and then click Control Panel.
>
>2. Double-click "Network and Internet Connections", and
then click to
> open the Network Connections folder.
>
>3. If more than one network connection is listed, for
each connection,
> double-click the connection and then click the Support
tab of the
> Status interface that opens. The connection that shows
a Default
> Gateway entry is probably the network connection that
is used to
> connect to the Internet. Note the name of the
connection (for example,
> "Local Area Connection 2").
>
>4. Start Registry Editor (Regedit.exe).
>
>5. Under the HKEY_LOCAL_MACHINE tree, go to the following
key:
>
>SYSTEM\CurrentControlSet\Control\Network\{4D36E972-E325-
11CE-BFC1-08002BE103
>18}\
>
>6. Under that key are one or more keys that have numeric
identifiers. Each
>of these keys has a Connection subkey. Examine each of
the keys that look
>like this:
>
><ID_for_Adapter>\Connection The Name value in the
Connection subkey
>provides the network connection name that is used in the
Network
>Connections folder. When you find the one that matches
the name that you
>found in step 3, make a note of the <ID_for_Adapter> that
the network
>connection name is under.
>
>7. Return to HKEY_LOCAL_MACHINE, and then locate the
following key
>SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfa
ces\<ID_for_Adapte
>r> where <ID_for_Adapter> is the number that you noted in
step 6. When you
>highlight this key, several values appear on the right
side of the screen,
>including DefaultGateway and EnableDHCP.
>
>8. Right-click the right side of the screen, click New,
and then click
>DWORD Value. Name the value MTU.
>
>9. Double-click the value so that you can edit the value,
change Base to
>Decimal, and then enter the largest acceptable MTU size,
which is the size
>that you identified by using the Ping tests.
>
>10. Quit Registry Editor.
>
>Chris Puckett, MCSE
>Microsoft Small Business Server Support
>
>
>This posting is provided "AS IS" with no warranties, and
confers no rights.
>
>.
>
- Next message: Christian: "RE: outlook 2003"
- Previous message: Chris F: "Re: POP3 Connector Issue"
- In reply to: Chris Puckett [MSFT]: "Re: POP3 Connector Issue"
- Next in thread: MikeMc: "Re: POP3 Connector Issue"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
