The Question is:
TCPIP/SMTP: I have an AlphaDS20E running an Oracle Database, I am attempting
to use SMTPmail to keep me informed after hours of how batch jobs are doing
(completion, or not).
The host uses an internal 10.30.x.x address. I can send SMTPmail out to the
internet successfully (log says I'm handshaking with outside hosts). However,
"reverse-lookup" on remote sites gives me an error;
recv buf=553 5.1.8 <email@example.com>...
Domain of sender address firstname.lastname@example.org does not exist\
# and SMTPmail is rejected.
I have set config smtp /substitute=name="markelcorp.com" and internet mail
works, however, in-house mail fails (email@example.com), since SMTP
thinks mail is to local host, instead of corporate mailserver. I have set
recommended logicalsper your sit
e to force SMTPmail, also. I have tried the "/zone=" option, I have tried
"/alternate=". Is there a specific combination that will work, allowing the
Internet to think I'm the "top-level domain", while the in-house sees me as a
"sub-level domain" ????
The Answer is :
Please contact your network management organization for assistance in
determining the correct network-specific addresses for configuring your
DNS/BIND and SMTP gateway settings. For details on configuring TCP/IP
Services, please see the TCP/IP Services management documentation.
As for your choice of IP addresses:
"The Internet Assigned Numbers Authority (IANA) has reserved the
following three blocks of the IP address space for private internets:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)"
Hosts within these reserved are not permitted to connect into the
Internet, without using some form of address translation mechanism.
IP address translation would have to be performed within the context
of a router or router-firewall box. Your network management
organization should be aware of the need for these devices or for
a change of IP addresses, if your organization makes regular use of
these reserved IP address blocks.
Please see rfc1918 for details.