Troubleshooting SMTP

Got one trading partner that is not getting our email.

06/03/2004 09:56:28   Router: No messages transferred to PPLASTIC.COM 
(host mail.PPLASTIC.COM) via SMTP: The server is not responding. The 
server may be down or you may be experiencing network problems. Contact 
your system administrator if this problem persists.

> ping pplastic.com 
  Verifying connection to host system PPLASTIC.COM at address 
    65.222.31.178. 
  PING reply 1 from 65.222.31.178 took 97 ms. 256 bytes. TTL 118. 
  PING reply 1 from 65.222.31.178 took 114 ms. 256 bytes. TTL 118.
    (Duplicate) 
  PING reply 2 from 65.222.31.178 took 34 ms. 256 bytes. TTL 118. 
  PING reply 2 from 65.222.31.178 took 35 ms. 256 bytes. TTL 118. 
    (Duplicate) 
  PING reply 3 from 65.222.31.178 took 36 ms. 256 bytes. TTL 118. 
  PING reply 3 from 65.222.31.178 took 38 ms. 256 bytes. TTL 118. 
    (Duplicate) 
  PING reply 4 from 65.222.31.178 took 35 ms. 256 bytes. TTL 118. 
  PING reply 4 from 65.222.31.178 took 37 ms. 256 bytes. TTL 118. 
    (Duplicate) 
  PING reply 5 from 65.222.31.178 took 34 ms. 256 bytes. TTL 118. 
  Round-trip (in milliseconds) min/avg/max = 34/51/114. 
  Connection verification statistics: 5 of 5 successful (100 %). 
> ping mail.pplastic.com 
  Verifying connection to host system MAIL.PPLASTIC.COM at address 
    65.40.78.139. 
  No response from host within 1 seconds for connection verification 1.
  No response from host within 1 seconds for connection verification 2.
  No response from host within 1 seconds for connection verification 3.
  No response from host within 1 seconds for connection verification 4.
  No response from host within 1 seconds for connection verification 5.
  Connection verification statistics: 0 of 5 successful (0 %). 

http://www.zmailer.org/mxverify-cgi.html
said it was "Apparently OK!", and it only had one minor irritant with it's 
failure to understand the ESMTP EHLO greeting.  But I've read that a lot 
of people turn that off and I don't think it's a big deal either.

Mail stays stuck in the various mailx.box files on the Domino server.

Where do I go from here?


Rob Berendt
-- 
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com