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Protocol Violation

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=1630
Printed Date: 15 March 2025 at 10:02pm


Topic: Protocol Violation
Posted By: Guests
Subject: Protocol Violation
Date Posted: 06 August 2003 at 4:18pm

Roberto,

Today I was looking the logs of my destination SMTP server (Norton AV for Gateways) and saw a lot of "Protocol Violation" like this:

06-Aug-2003 17:00:45  Action: Message Accepted  Client: 10.0.0.35  From: marcelo_v_g@yahoo.com.br  
To: gcoelho@sulamerica.com.br  Subject: Re: Cirurgia  Size: 1592  
SMTP ID: M2003080617004532302  Connection ID: 16  
06-Aug-2003 17:00:45  Action: Protocol Violation  Client: 10.0.0.35  Connection ID: 16  
Info: Unknown command.  Last Command: .  
06-Aug-2003 17:00:45  Action: Disconnected  Client: 10.0.0.35  Connection ID: 16  

10.0.0.35 is Spamfilter. Take a look at the "Last Command:" and you can see a dot (.). It seems that Spamfilter is sending twice the dot trying to end a message. I have logged the conversation between Spamfilter and my destination server and we can see:

> 17:0:45 3 .
< 17:0:45 56 250 M2003080617004532302 Message accepted for delivery
> 17:0:45 3 .
< 17:0:45 41 500 Syntax error, command unrecognized.
> 17:0:45 6 QUIT
< 17:0:45 49 221 navgw.sulamerica.com.br closing connection.

Lines with the ">" are Spamfilter sending commands and with "<" are my destination SMTP server answering. The message is accepted but every message logs this error.

Can you verify this ?

Thanks,

Abel.




Replies:
Posted By: LogSat
Date Posted: 08 August 2003 at 6:49pm

Abel,

Unfortunately you are correct.. We were able to reproduce the same thing. You've just found another bug, we'll have it fixed in the next build.

Roberto
LogSat Software



Posted By: LogSat
Date Posted: 10 August 2003 at 11:42am

Abel,

We've posted beta 1.2.0.195 in the registered user's download are to fix this issue. Please let us know if you have further problems.

Roberto F.
LogSat Software




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