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SmtpEvt 20031( Error Sending Emails Through ISA)

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SmtpEvt 20031( Error Sending Emails Through ISA) - 20.Nov.2007 3:01:01 AM   
alikhoshbin

 

Posts: 80
Joined: 13.May2001
From: tehran,TH,Iran
Status: offline
hi all

our smtp server is behind firewall & on the firewall all IP traffice is allowed for this computer ,also SMTP filter is enabled on ISA BUT sometimes i get the below error on ISA Logs & on SMTP server get "Connection was dropped by Remote host "  for domains such as yahoo.com ,gmail.com & so on .actually i don't find any specific DATA on the record to enable on SMTP filter of ISA.

Any help is appreciated.

ali_khoshbin@hotmail.com

*********************************************************
Event Type: Error
Event Source: SmtpEvt
Event Category: None
Event ID: 20031
Date:  11/20/2007
Time:  11:12:56 AM
User:  N/A
Computer: FP
Description:
An unknown SMTP command
Data:
0000: cd ce c2 db c5 20 cf d0  
0008: e0 c2 e8 eb e0              
****************************************
Event Type: Error
Event Source: SmtpEvt
Event Category: None
Event ID: 20031
Date:  11/20/2007
Time:  11:02:59 AM
User:  N/A
Computer: FP
Description:
An unknown SMTP command
Data:
0000: cd ce c2 db c5 20 e0 e4  
0008: cc e8 ed e8 f1 d2 d0 e0  
0010: d2 e8 c2 ed db c5          
****************************************
Event Type: Error
Event Source: SmtpEvt
Event Category: None
Event ID: 20031
Date:  11/20/2007
Time:  10:50:45 AM
User:  N/A
Computer: FP
Description:
An unknown SMTP command
****************************************
Event Type: Error
Event Source: SmtpEvt
Event Category: None
Event ID: 20031
Date:  11/20/2007
Time:  10:44:07 AM
User:  N/A
Computer: FP
Description:
An unknown SMTP command
Data:
0000: c8 ed ce f1 d2 d0 e0 ed  
0008: ed db c5 20 f1 ce d2 d0  
0010: f3 e4 ed e8 ca e8          
****************************************

Event Type: Error
Event Source: SmtpEvt
Event Category: None
Event ID: 20031
Date:  11/20/2007
Time:  10:22:27 AM
User:  N/A
Computer: FP
Description:
An unknown SMTP command
Data:
0000: c8 e7 cc c5 ed c5 ed e8  
0008: ff 20 c2                      

Post #: 1
RE: SmtpEvt 20031( Error Sending Emails Through ISA) - 20.Nov.2007 6:12:04 PM   
AHIT

 

Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
http://support.microsoft.com/kb/312357/en-us

_____________________________

http://www.ahit.com.au/isa
(Previous nick: Tolk)

(in reply to alikhoshbin)
Post #: 2
RE: SmtpEvt 20031( Error Sending Emails Through ISA) - 21.Nov.2007 1:31:46 AM   
alikhoshbin

 

Posts: 80
Joined: 13.May2001
From: tehran,TH,Iran
Status: offline
hi
i checked the MS website which you mentioned but as u can see in DATA field of my logs NO SMTP DATA is defined so i don't know the command name so nothing can be added to SMTP filter .

thanks for your kind attention .

(in reply to alikhoshbin)
Post #: 3
RE: SmtpEvt 20031( Error Sending Emails Through ISA) - 21.Nov.2007 7:17:45 PM   
AHIT

 

Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
do the logfiles created by the SMTP instance itself contain any information.. instead of the EventLogs?

_____________________________

http://www.ahit.com.au/isa
(Previous nick: Tolk)

(in reply to alikhoshbin)
Post #: 4
RE: SmtpEvt 20031( Error Sending Emails Through ISA) - 4.Dec.2007 1:26:32 AM   
alikhoshbin

 

Posts: 80
Joined: 13.May2001
From: tehran,TH,Iran
Status: offline
hi
i checked smtp logs & nothing strange exist (on Mail Relay Server ) . i still get this unicode names in Data section of event logs .have you ever seen this data in your ISA logs.

thanks in advance

(in reply to AHIT)
Post #: 5
RE: SmtpEvt 20031( Error Sending Emails Through ISA) - 5.Dec.2007 7:42:35 AM   
AHIT

 

Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
I'm not getting similar references in my logs.
Can you perhaps run netmon on your ISA server and send yourself an email from a gmail account and capture the smtp exchange?
Yes, it's a bit of effort but I've got no alternative ideas I'm afraid!


_____________________________

http://www.ahit.com.au/isa
(Previous nick: Tolk)

(in reply to alikhoshbin)
Post #: 6

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