(usr-tc) ISDN and FILE ATTACH

I'm still having trouble with some ISDN users, that cannot send e-mails with attached files. The common thing among these users is that they're using a TELES ISDN Winmodem (www.teles.de), and I have may of then, since it's being sold by the local telco. Someone already told me to reduce the MTU in the ARC, but it does not solve the problem. The FW version is: DSP - 2.1.9 ARC - 4.1.59 Any tip? - Marcelo - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.