Email Messages from Address not Displaying Properly from address.

When mail is sent from Ireland to a clients address the messages arrive incorrectly.  Often pictures and/or other attachments are stripped.  The message appears the same in webmail and when using Thunderbird ruling out a local machine issue.  Thoughts?  Thanks in advance.


Date: Wed, 20 Aug 2014 11:56:54 +0100
To: jane <>
Cc: "" <>
Subject: Fwd: Bobby
MIME-Version: 1.0
Content-Type: multipart/mixed;
Content-Transfer-Encoding: 7bit
User-Agent: Internet Messaging Program (IMP) H3 (4.0.4-cvs)
X-CTCH-RefID: str=0001.0A020207.53F47EFC.0012,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0
X-CTCH-VOD: Unknown
X-CTCH-Spam: Unknown
X-CTCH-Score: 0.000
X-CTCH-Flags: 0
X-CTCH-ScoreCust: 0.000

This message is in MIME format.

Content-Type: text/plain;
Content-Disposition: inline
Content-Transfer-Encoding: 7bit
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btanExec ConsultantCommented:
How e-mail message formats affect Internet e-mail messages in Outlook
When an e-mail client that does not understand TNEF receives a message that contains TNEF information, you may instead received "Winmail.dat" attachment or an attachment with a generic name such as ATT00008.dat or ATT00005.eml. I supposed this is not your case...

I suspecting if there is any different in the email header and the route go thru smtp server that have tamper this or extension in your email client doing such stripping inadvertently. there is case the max limit for file and even fie type are stripped based on default policy (transparent to user). Should probably check if sent folder has those attachment too to isolate to client or server

Another thought is as shared in public

My experience is that attachments get stripped by the receiver, not by the sender. It most frequently happens when the total size (in Kb) exceeds the upper limit of the email provider for your receiver addresses. Yahoo mail also has an upper limit, but it is quite large; so you are unlikely to exceed its limit unless you try to email a lot a .jpg or mpg files for example. This could easily explain why those stripped attachments come into you, but fail to get to your forwarded addresses. That is, Yahoo's upper limit is greater than the providers for your To: addressees.
btan covered about everything, from here your customers may have to contact myfairpoint support

"IF" you are seeing ".DAT" attachments, Thunderbird has an extension called "LookOut" which will translate the email, restoring the attachments sent by Outlook
1namylnAuthor Commented:
For testing I'm going to recommend they try a Gmail address and see if the issue is resolved.  My guess is it will be as I'm sure Google has a much more advanced email system.
That would be a good place to start troubleshooting  IMO

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btanExec ConsultantCommented:
agree as well do try out and I do suspect mostly the receiving party is filtering else is the email formatting ...
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