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Explicit source routing -Reply

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Mark Ziemba

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Sep 3, 1996, 3:00:00 AM9/3/96
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Sounds like a DNS problem. If your ISV's DNS is flaky, use a secondary
DNS. Or, route the messages with the IP address explicityly and avoid
ther DNS altogether.

If you "ping" and get no response (while they claim they're up), are you
"pinging" the ABC.COM or their actual IP address? If that actual address
responds but the domain doesn't, it's truly a DNS problem.

>>> Clark Mumaw <CMU...@SKGF.COM> 09/03/96 04:37pm >>>
I am trying to figure out (prove) for myself and my ISP why we are
having problems e-mailing to specific hosts when 97% of our e-mail to
different sites is OK. Thus, comes the requests for information on
"explicit source routing". Or the Micheal Jordan of e-mail, over the sun,
around the unix, under the dos and nothing but gateway.

Problem - When sending to ABC.COM, mail does not go through all the
time. Sometimes it goes straight through but often enough (30%) it
delays for 4 to 24 or 48 hours before finally being taken out of the
"defer" directory without any errors. We can sometime ping the site and
sometimes not but we call the destination and they are running and
receiving e-mail from everyone else.

Idea - I am trying to bounce mail off another SMTP Gateway or Host to
prove if I can use "my system" and force different route (instead of the
TCPIP default algorithm) will make me successful. After all, I can send to
ABC.COM from my home AOL account.

If anyone has been successful or knows of more information than is in
the "SMTP Gateway Guide" for DOS pg 83 (Advanced Addressing
Issues) let me know at CMU...@SKGF.COM.

David Spigelman

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Sep 3, 1996, 3:00:00 AM9/3/96
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Clark:

Try sending to something like cmumaw%skgf...@sun.com. This will
send your message out your gateway to Sun's mail host, which will
then bounce it back to yours. If you want to send it to another location,
substitute that address for yours above.

##########################################################
David Spigelman, CNE American Center for
Physics
Network Administrator One Physics
Ellipse
(301) 209-3117 College Park,
MD 20740
http://acp.org/~dspigelm
dspi...@acp.org
##########################################################

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