We are having problems sending certain PDF file attachment (~60kbytes) through Microsoft Exchange which have been digitally signed using Adobe Acrobat . When the attachment arrives at the destination and is opened in Acrobat the signature status is 'Signature invalid'. The problem is not happening to all signed PDFs, probably around 1 in 4 PDFs are corrupted.
I have narrowed the problem down to Microsoft Exchange. I've sent the same PDF files with Outlook and Outlook Express using SMTP (with our Exchange SMTP and other SMTP servers) and they go through fine. But when sent from an Exchange client the Acrobat digital signature are getting corrupted. I've tried all different variations of the attachment options in the Exchange IMS but to no avail. We are using Exchange 5.5 SP4 on Windows 2000 Advanced Server. Our Exchange anti-virus is Trend Micro Scanmail. Anyone come across this problem or something similar before? Regards Max Max Wall, IT Services, Seven Worldwide Ltd Web: http://www.sevenww.co.uk Tel: +44 (0)20 7871 7883 _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
