Outlook converting attachments into code

My office has a supplier that is now not receiving our email attachments.  They recently switched to Outlook 2010.  When we send attachments, Outlook seems to convert all the attachments into 50 pages of code garbage.  I assume it is on their end, but I'm wondering the reason for it.  When they send back what they get from our office, it looks like what I posted below.  If you need to see more of the garble, let me know.  Thanks in advance for any help you can give.

X-Authority-Analysis: v=1.1 cv=q/+l8z/c4pnswxeNlfvSspGq5Qhrr6fQ1QVuuP3iCk0= c=1 sm=0 a=E3JVC6RVJOUA:10 a=98mLTqaoegCwyw7beBhU8w==:17 a=ar6JvBxVAAAA:8 a=mBmpIsJIN85P_Te_p4MA:9 a=8BiiS35oOoFLEj6nsrcA:7 a=7c0nMWa9CRBd2caSOJTch5cG-O4A:4 a=wPNLvfGTeEIA:10 a=i-1EiFEc6ooA:10 a=6-_ECcqnqsMA:10 a=KXProlzQkdsA:10 a=Wge2UBJLlVsA:10 a=w6sed0etgf8A:10 a=X_Syrzr6DhgA:10 a=MJF-vfZgdBUA:10 a=jJy8Ef6IOrLfn-AW:21 a=JIUxjuwRN2CKctT4:21 a=SSmOFEACAAAA:8 a=Y2VNeNrzAAAA:8 a=yMhMjlubAAAA:8 a=TW66zc2HAAAA:8 a=HQ31llbKAAAA:8 a=jvxJMuiFtHHlPAge--cA:9 a=HhhGh3OKx3XISX0_Jn0A:7 a=czuMrDUTv8wmH3yGv59G0eqZ_2AA:4 a=J3xfwoMtMMoA:10 a=c8hVNb-yVdgUOXdp:21 a=qep2xuTtVUljvYdW:21 a=jFVMj1KZI1aRy_eDVYAA:9 a=wDkcOGQXQ88N15AEjIFfIBbfFAMA:4 a=KQqxNPgzF0kA:10 a=ucH7BwLj_I8A:10 a=NGQPQq8vlMMG60eU:18 a=JLmJ2gJPJZ-6P5ze8bgA:9 a=lmSqsIcKMG80vJSg8g-R9SRhDsgA:4 a=diV1Cm6KfS4A:10 a=_oIkrB6u2AiGUemw:21 a=RC-WjQVhXlqColYZ:21 a=ijuBvAxSAAAA:8 a=3lLbUHl3AZwFFdMowokA:9 a=3mafT1HIy4SYBP7WRAFfL7-m5PAA:4 a=B7Jn2g7OClQA:10 a=zKSThUc_gt-Tp2Ym:21 a=oIfl56DOtWrZzg6R:21 a=98mLTqaoegCwyw7beBhU8w==:117
X-Cloudmark-Score: 0
X-Originating-IP: 24.172.18.202
Received: from [24.172.18.202] ([24.172.18.202:44403] helo=CARY3)
      by cdptpa-bc-oedge01.mail.rr.com (envelope-from <headquarters@isth.org>)
      (ecelerity 2.2.2.39 r()) with ESMTPA
      id 83/D6-16205-B518A6C4; Tue, 17 Aug 2010 12:32:31 +0000
From: "ISTH headquarters" <headquarters@isth.org>
To: =?iso-8859-1?Q?'Ren=E9_Haller_=28MCI_Geneva=29'?= <Rene.Haller@mci-group.com>
Subject: FW: 2012 ISTH SSC -- ACC rental negotiations
Date: Tue, 17 Aug 2010 08:38:30 -0400
Message-ID: <00eb01cb3e09$193b3710$4bb1a530$@org>
MIME-Version: 1.0
Content-Type: multipart/mixed;
      boundary="----=_NextPart_000_00EC_01CB3DE7.92299710"
X-Priority: 1 (Highest)
X-MSMail-Priority: High
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: AQHKtwQIzSYR31zM6EyNLSTDtV0rVZHYmllAgCbDPOCAAZ9p4IABcBpQgAAozZCAQ9SS0IBCS0yggDZZ6bCAEX0yAIAJp4OAgANk54CAAV2JEIAHrMRw
Content-Language: en-us
Importance: High
X-SEF-7853D99-ADF1-478E-8894-213D316B8FFA: 1
X-SEF-ZeroHour-RefID: vtr=0001.0A0B020A.4C6A8161.0358,vl=0,fgs=0
X-SEF-Processed: 6_1_1_00184__2010_08_17_14_32_34

This is a multi-part message in MIME format.

------=_NextPart_000_00EC_01CB3DE7.92299710
Content-Type: multipart/related;
      boundary="----=_NextPart_001_00ED_01CB3DE7.92299710"


------=_NextPart_001_00ED_01CB3DE7.92299710
Content-Type: multipart/alternative;
      boundary="----=_NextPart_002_00EE_01CB3DE7.92299710"


------=_NextPart_002_00EE_01CB3DE7.92299710
Content-Type: text/plain;
      charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

rcaryclarkAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Barry GillChief of StaffCommented:
You are probably sending to them in RTF
To change the setings in outlook 2007:
Tools / Options / Mail format - Compose in this message format: HTML ,
and from Internet Format:
When sending Outlook Rich text messages to internet recipients , use this format: Send using HTML.

I would advise this as a first step.

Otherwise you need to look at what devices they have examining data in the path from you to them. Trend Micro WAS (older versions) known to add a line break and empty line in the middle of the headers effectively telling the servers that the headers ended at that line break empty line, so the rest then simply shows as text.
0
rcaryclarkAuthor Commented:
Thanks for the comments barrulus, but we are not sending in RTF.  We send in HTML.  

I don't know what type system they have on their end.  Could it be an issue with their antivirus?
0
Barry GillChief of StaffCommented:
yes it could, if you have NO OTHER PEOPLE complaining about this, then ask them to talk to their gateway providers.
It could be that they are experiencing the added whiteline in the headers problem when you send to them.

My money is on their AV/AS gateway.
0
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

rcaryclarkAuthor Commented:
I've been doing some more testing and removing the spaces in the excel document being sent cleared up the problem.  I remember this being a problem pre-XP, but I hadn't seen this problem in awhile.  Is that still a problem with the receiver?
0
Barry GillChief of StaffCommented:
I believe it is. Probably all that happened while you cleared those up is that a size or something of the message has trimmed SOMETHING in the headers and the AV/AS system is no longer applying the same change.

I would be very curious to see what the different messages look like, if you can recreate the problem I would seriously capture the traffic outside your server to see what the differences are...

use wireshark...
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
rcaryclarkAuthor Commented:
Thanks for the help.  I haven't used wireshark, but I'll give it a go.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Outlook

From novice to tech pro — start learning today.