[nos-bbs] SMTP server response to LAN client

[(Skip) K8RRA]

I have dug into a failure deeply enough to get over my head.
This is a request for help with jnos on Linux with a remote mail reader.
Here is a summary of my last few days work on this issue:

My site is jnos2.0e including three upgrades not related to this issue.
The config.h is lightly modified from the standard & compiled here.
The platform is FC-7, and most things work nicely day-in/day-out.

My mail reader is Evolution and I am POPing mail OK from jnos.
When I try to *respond* to mail from jnos using Evolution there is a
delivery problem with some mail:
  Mail to the local system areas delivers OK
  Mail to my neighbor node fails
    a) Evolution responds to me:
             "...mailbox unavailable." (seen in pop-up window)
    b) jnos SMTP responds to Evolution:
             "550 ... address unknown" (seen in tun0 trace)

I find that rewrite is *not* modifying the To: address.  The To: address
is identical to an address that delivers OK if/when similar mail is
entered via the BBS mailbox of jnos.  The From: address is valid for
local delivery in both forms: a) IP number  b) domain name.

The "mbox header" is OFF, the "third-party" is OFF, no entry in ftpusers
contains the "no_third-party" bit turned on.  When I read smtpserv.c I
find seven tests that can give the jnos response output - yes I don't
know which one is coming up true!...:-(

As I study the documentation on this subject, the approved action for
SMTP server is to deliver the message to local recipients first, then
second for remote recipients deposit the message into ./spool/mqueue for
SMTP client to forward.  For me -- the second part is not working...

Clearly the difference lies in the source of the message.  BBS mail is
OK, Evolution mail fails.  I am now several days into poking around with
the details and have not found the cause for the failure.

If anyone has been successful at using mail reader on the LAN hooked up
to jnos as a delivery path, then perhaps you shine a light on my
situation?  I'm needing a beer...

MANY MANY THANKS if you can work magic...

73
de [George (Skip) VerDuin] K8RRA k