Zip files checking

[Roger Jochem]

I put the two messages in http://www.alpesmoveis.com.br/messages

The "Test Message.eml" is the first one, and "Fw_ Test Message.eml" is the
forwarded...

The first was blocked by MailScanner, and the second passed through.



----- Original Message -----
From: "Julian Field" <mailscanner at ECS.SOTON.AC.UK>
To: <MAILSCANNER at JISCMAIL.AC.UK>
Sent: Thursday, April 08, 2004 5:07 AM
Subject: Re: Zip files checking


> Can you put the two messages on a web server somewhere and send me the URL
> please. Then I'll take a look at the problem.
>
> At 20:20 07/04/2004, you wrote:
> >I would say this is a problem. I looked my exim logs and everything was
the
> >same for both files. I listed the MailScanner logs and you can see
same/same
> >except for the unpacking and I also trapped both messages as they passed
> >into the MailScanner queue and copied them elsewhere to look at them and
> >there was nothing different about the two emails (Both were attachments
to a
> >text only message). I tried the same thing sending a virus and it caught
the
> >virus in the forwarded message. It's an odd ball thing but I won't have
time
> >to trace it through MS until the weekend. I see no possible configuration
> >setting that should cause attachments to a forwarded message to be
handled
> >differently than a normal message and neither the header or body parts
had
> >any differences except what you would expect to see for a forwarded
message
> >(Subject, MsgId, etc). My virus.scanning.rules during the forward test
were
> >quite simple
> >
> >FromOrTo:       default                     yes
> >
> >the same as when I sent the zip normally and it was caught (as the log
shows
> >they were only a second or so apart)
> >
> >Rick
> >
> > > -----Original Message-----
> > > From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK]On
> > > Behalf Of Roger Jochem
> > > Sent: Wednesday, April 07, 2004 1:53 PM
> > > To: MAILSCANNER at JISCMAIL.AC.UK
> > > Subject: Re: Zip files checking
> > >
> > >
> > > Then it is really a problem? Or some misconfiguration in both our
systems?
> > >
> > > ----- Original Message -----
> > > From: "Rick Cooper" <rcooper at DWFORD.COM>
> > > To: <MAILSCANNER at JISCMAIL.AC.UK>
> > > Sent: Wednesday, April 07, 2004 12:47 PM
> > > Subject: Re: Zip files checking
> > >
> > >
> > > > I did the same test, first one through with checking turned off for
the
> > > host
> > > > I sent from so I could receive the zip with the exe in it.
> > > returned rules
> > > to
> > > > normal so all check would be on and it passed the forwarded exe
> > > in the zip
> > > > file. Then tried to send the same file to same address without
> > > forwarding
> > > > and it was blocked. My MailScanner log for the two events:
> > > >
> > > > Forwarded message:
> > > >
> > > > Apr  7 10:32:07 srv2 MailScanner[23024]: New Batch: Scanning 1
messages,
> > > > 974634 bytes
> > > > Apr  7 10:32:07 srv2 MailScanner[23024]: Spam Checks: Starting
> > > > Apr  7 10:32:09 srv2 MailScanner[23024]: Virus and Content Scanning:
> > > > Starting
> > > > Apr  7 10:32:13 srv2 MailScanner[23024]: Uninfected: Delivered 1
> > > > messagesNormal message:
> > > >
> > > > Normal Message:
> > > >
> > > > Apr  7 10:33:31 srv2 MailScanner[23120]: New Batch: Scanning 1
messages,
> > > > 974473 bytes
> > > > Apr  7 10:33:31 srv2 MailScanner[23120]: Spam Checks: Starting
> > > > Apr  7 10:33:32 srv2 MailScanner[23120]: Virus and Content Scanning:
> > > > Starting
> > > > Apr  7 10:33:37 srv2 MailScanner[23139]: MailScanner E-Mail
> > > Virus Scanner
> > > > version 4.29.7 starting...
> > > > Apr  7 10:33:38 srv2 MailScanner[23139]: Using Custom Function file
> > > > /opt/MailScanner/lib/MailScanner/CustomFunctions/MyExample.pm
> > > > Apr  7 10:33:40 srv2 MailScanner[23120]: Filename Checks:
Windows/DOS
> > > > Executable (1BBF3B-00060P-9A McAfeestinger.exe)
> > > > Apr  7 10:33:40 srv2 MailScanner[23120]: Filetype Checks: No
executables
> > > > (1BBF3B-00060P-9A McAfeestinger.exe)
> > > > Apr  7 10:33:40 srv2 MailScanner[23120]: Other Checks: Found 2
problems
> > > > Apr  7 10:33:40 srv2 MailScanner[23120]: Cleaned: Delivered 1
cleaned
> > > > messages
> > > > Apr  7 10:33:40 srv2 MailScanner[23120]: Notices: Warned about
> > > 1 messages
> > > >
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: MailScanner mailing list
[mailto:MAILSCANNER at JISCMAIL.AC.UK]On
> > > > > Behalf Of Julian Field
> > > > > Sent: Wednesday, April 07, 2004 8:48 AM
> > > > > To: MAILSCANNER at JISCMAIL.AC.UK
> > > > > Subject: Re: Zip files checking
> > > > >
> > > > >
> > > > > Please can you double check this and your mail setup to ensure
mail is
> > > > > taking the route you think it is. MailScanner neither knows nor
cares
> > > > > whether a message is forwarded unless you are using rulesets on
the
> > > > > relevant configuration options.
> > > > >
> > > > > At 20:49 06/04/2004, you wrote:
> > > > > >I'm sending this e-mail again because my configuration on
> > > the list was
> > > > > >incorrect, and I don't know if it already was sended or
> > > because of this
> > > > > >"misconfiguration" the email didn't gone at the first time..
(sorry)
> > > > > >
> > > > > >I found a strange problem in MailScanner. I just updated my
> > > > > MailScanner to
> > > > > >version 4.29-7, and now I was testing the zip file checking.
> > > > > >
> > > > > >I send an e-mail with an .exe file inside an .zip file, and
> > > mailscanner
> > > > > >blocked it. Great! It worked!
> > > > > >
> > > > > >And then I forwarded this .zip file, and this time the .zip
> > > file passet
> > > > > >through mailscanner.
> > > > > >
> > > > > >Then I made several other tests, and found out that every
> > > .zip file in
> > > > > >e-mails are checked and blocked, but if the e-mail is forwarded,
the
> > > .zip
> > > > > >file always passes through.
> > > > > >
> > > > > >Any ideas to correct this problem?
> > > > > >
> > > > > >Roger Jochem
> > > > > >SBS - SC
> > > > > >Brazil
> > > > >
> > > > > --
> > > > > Julian Field
> > > > > www.MailScanner.info
> > > > > Professional Support Services at www.MailScanner.biz
> > > > > MailScanner thanks transtec Computers for their support
> > > > > PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
> > > > >
> > > > > --
> > > > > This message has been scanned for viruses and
> > > > > dangerous content by MailScanner, and is
> > > > > believed to be clean.
> > > > >
> > > > >
> > > > >
> > >
> > > --
> > > This message has been scanned for viruses and
> > > dangerous content by MailScanner, and is
> > > believed to be clean.
> > >
> > >
> > >
>
> --
> Julian Field
> www.MailScanner.info
> Professional Support Services at www.MailScanner.biz
> MailScanner thanks transtec Computers for their support
> PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654