XADM: Administrator Program Corrupts the IMC Routing Table
ID: Q182522
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The information in this article applies to:
-
Microsoft Exchange Server, versions 5.0, 5.5
SYMPTOMS
When you use the Exchange Administrator program to modify the Internet Mail
Service (IMC) settings, the Administrator program may corrupt the Internet
Mail Service (IMC) Routing table. When this happens, the Microsoft Exchange
Internet Mail Service fails to start. The following event is logged in the
event viewer:
Event ID: 4056
Source MSExchangeIMC
Type: Error
Category: Initialization/termination.
Description: Unable to parse the delivery route anlsf.msbp.co. Since
errors in delivery routing parameters can result in misrouted mail, the
Internet Mail Service will not start until this error is corrected.
This problem can occur when a change is made to the routing table in the
Internet Mail Service configuration. The routing table referred to here is
configured through the E-Mail Domain button on the Connections tab of the
Internet Mail Service (IMC) properties page. After a change is made, the
Internet Mail Service no longer starts.
Further attempts to modify this routing table may cause the Exchange
Administrator program to stop responding (crash). When the Exchange
Administrator program stops responding, the following information may be
found in the Dr. Watson log (Drwtsn32.log):
State Dump for Thread Id 0x1b0
eax=00003b00 ebx=0000003b ecx=01000000 edx=00000001 esi=00a65f90
edi=78005ca4
eip=78005d01 esp=0012a618 ebp=00a65a60 iopl=0 nv up ei pl nz na
pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000202
function: strchr
78005ceb 7537 jnz strchr+0x80 (78005d24)
78005ced 2500010181 and eax,0x81010100
78005cf2 74d3 jz strchr+0x23 (78005cc7)
78005cf4 2500010101 and eax,0x1010100
78005cf9 741f jz strchr+0x76 (78005d1a)
78005cfb 5e pop esi
78005cfc 5f pop edi
78005cfd 5b pop ebx
78005cfe 33c0 xor eax,eax
78005d00 c3 ret
FAULT ->78005d01 8a0a mov cl,[edx]
ds:00000001=??
78005d03 42 inc edx
78005d04 38d9 cmp cl,bl
78005d06 0f847c1f0100 je mbsnbicoll+0x3b (78017c88)
78005d0c 84c9 test cl,cl
78005d0e 74ed jz strchr+0x59 (78005cfd)
78005d10 f7c203000000 test edx,0x3
78005d16 74a4 jz strchr+0x18 (78005cbc)
78005d18 ebe7 jmp strchr+0x5d (78005d01)
78005d1a 81e600000080 and esi,0x80000000
78005d20 75a5 jnz strchr+0x23 (78005cc7)
78005d22 ebd7 jmp strchr+0x57 (78005cfb)
*----> Stack Back Trace <----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
00a65a60 736d2e66 632e7062 613b006f 66736c6e 62736d2e msvcrt!strchr
*----> Raw Stack Dump <----*
0012a618 f0 5a a6 00 29 d1 8e 01 - 01 00 00 00 3b 00 00 00
.Z..).......;...
0012a628 2c ab 71 00 10 01 00 00 - c4 a9 12 00 78 aa 71 00
,.q.........x.q.
0012a638 b8 ad 12 00 84 af 12 00 - 04 af 12 00 44 af 12 00
............D...
0012a648 0f 00 00 00 00 00 00 00 - 97 00 00 00 78 a6 12 00
............x...
0012a658 3c 19 c3 77 01 00 00 00 - 50 02 0a 2c 4d 00 53 00
<..w....P..,M.S.
0012a668 00 00 00 00 00 00 00 00 - 2e 01 00 00 f0 00 00 00
................
0012a678 44 00 65 00 6c 00 69 00 - 76 00 65 00 72 00 20 00
D.e.l.i.v.e.r. .
0012a688 55 00 73 00 69 00 6e 00 - 67 00 00 00 00 00 00 00
U.s.i.n.g.......
0012a698 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6a8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6b8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6c8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6d8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6e8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a6f8 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a708 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a718 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a728 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a738 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
0012a748 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
................
CAUSE
The Imcadmin.dll file corrupts the heap when there are too many entries in
the table.
RESOLUTION
The new Imcadmin.dll file only prevents the problem from reoccurring. You
still need to perform the following steps to resolve the situation that is
currently occurring:
- Run IMCCOPY (from the Exchange 5.5 Server CD \server\support\utils\i386)
to copy out the information. Command line:
IMCCOPY -save routes c:\exchsrvr\imcdata\save.txt
- Open Save.txt.
- Look for the [Routes] section. It should look similar to the following:
[Routes]
DeliveryRouting=+
+DOMAIN.COM;xxx.xxx.xxx.xxx;0
DefaultRouting=
Note: xxx.xxx.xxx.xxx is an actual IP address for that domain
- Delete everything after DeliveryRouting= and before DefaultRouting=. The
updated list should look like:
[Routes]
DeliveryRouting=
DefaultRouting=
- Save the updated file to save_fix.txt.
- Run IMCCOPY again to restore. Command line:
IMCCOPY -restore routes c:\exchsrvr\imcdata\save_fix.txt
- Start the Internet Mail Service and verify that it starts.
- Run ADMIN to verify routes are gone.
- Next, either re-enter the routes manually via ADMIN or "restore" the
routes using IMCCOPY. Edit the save_fix.txt file and add the routes
using the [Routes] above as a guide. Then use the following command
line:
IMCCOPY -restore routes c:\exchsrvr\imcdata\save.txt
- Restart the Internet Mail Service.
STATUS
Microsoft has confirmed this to be a problem in Exchange Server version
5.0.
A supported fix is now available, but has not been fully regression-tested
and should be applied only to systems experiencing this specific problem.
Unless you are severely impacted by this specific problem, Microsoft
recommends that you wait for the next Service Pack that contains this fix.
Contact Microsoft Technical Support for more information.
Microsoft has confirmed this to be a problem in Exchange Server version
5.5.
This problem has been corrected in the latest U.S. Service Pack for
Microsoft Exchange Server version 5.5. For information about obtaining the
Service Pack, query on the following word in the Microsoft Knowledge Base
(without the spaces):
S E R V P A C K
Additional query words:
route drwatson watson
Keywords : XADM
Version : winnt:5.0,5.5
Platform : winnt
Issue type : kbbug