Cannot send PDF attachments to internet

I cannot seem to send any Adobe PDF file attachments to any internet recipients at all.

I keep getting back a delivery failure from the server with the message:

Error transferring to 172.21.3.100; Unknown type of compression technique Unknown type of compression technique

172.21.3.100 is the interior network address of my Internet SMTP “smart host” relaying firewall server.

Subject: Cannot send PDF attachments to internet

Apparently I can send PDF attachments to other internal Lotus recipients ok. Just not to anyone out on the Internet.

Subject: KNOWN BUG found…

…had LZ1 compression enabled in mail database properties, as it was recommended to save space, but doesn’t work fully yet in 6.01.

Subject: RE: KNOWN BUG found…

I’m guessing that your SMTP mail gateway is a v5.x server, your home server is a v6.x server, and your client is a v6.x client.

I’m using v6.x all the way through with LZ1, and have no issues…

—* Bill

Subject: Nope, no R5 servers here…

We deployed initially with 6.0 and now on 6.0.1