[comp.os.vms] DECnet packet sizes

matts@ksab.sunet.se.UUCP (09/02/87)

I am writing an SMTP-server for VAX/VMS (PMDF) that can receive incomming
SMTP connections from TOPS-20/MM over DECnet. MM tries to connect to object
125 for SMTP when mailing to a VMS-system, and if that fails uses mail-11.
The problem is that MM sends the message as one single DECnet packet, and
my QIO' buffer overflows with DATAOVERRUN if the message is larger than
the buffer. How shall I do to read from the DECnet-channel less than a full
packet..?

Cheers,
	Matts Kallioniemi <MATTS@SEQZ51.BITNET>
	KOMunity Software AB, Stockholm, Sweden

matts@ksab.sunet.se (Matts Kallioniemi) (09/22/87)

The only answers I got to my query a few weeks ago about how to read
from a DECnet channel when the messages can be infinitely large, told
me that it's impossible..!

If a DEC-20 can write it, then surely a VAX should be able to read it.
Do I have to write my own DECnet device driver, or what? It doesn't
sound too amusing..

Cheers,
        Matts Kallioniemi <MATTS@SEQZ51.BITNET>, <matts@ksab.sunet.se>
        KOMunity Software AB, Stockholm, Sweden