Hi Folks! I have an issue emailing an outside recipient with a specific Powerpoint 2010 file attached. I can email this person without issue if just sending an email without any attachments. I try and send a certain PPT file attached and I get this below NDR back immediately. I wanted to ask if anyone can guess as to why this might occur?? We are mailing from an Exchange 2010 server using Outlook 2010. I am not sure what their setup is aside from having Trend Micro involved. Thanks!
xxx.xxx.xxx.trendmicro.com #<xxx.xxx.xxx.trendmicro.com #5.0.0 smtp; 554 Malformed Email Rejected.> #SMTP#