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HP OpenVMS Systemsask the wizard |
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The Question is: I realized you wanted our story, too. It's a little unusual, and I'm not sure the FDDI packet size is relevant, but here goes: We run MX Server (5.1) over Multinet over DECnet-OSI (TCP/IP environment; DECnet is configured, but rarely used). I have a very large one-way mailing list (about 48,000 subscribers). When communicating with some mail servers (particularly hotmail), the smtp connection on my end records a "device timeout" and resets the connection to retry in 30 minutes. It doesn't always fail, however, sometimes it works just fine and the complete message is sent. Unfortunately hotmail is "hot" to deliver, and ends up delivering a blank email to the user, anyway! It looks like our data transmission is getting black-holed somewhere, and I wanted to check to make sure that the transmit packet size on the FDDI was less than 1536 bytes (ethernet size), so that our router (or someone else's) doesn't inappropriately fra gment the data. Thanks! The Answer is : This situation is sufficiently complex -- with enough third-party products involved -- that resolution will likely warrant a call to the relevent Customer Support Centers for assistance. As a first cut at localizing the problem, the OpenVMS Wizard would recommend contacting the MultiNet Support organization -- that DECnet-Plus or FDDI is present would initially appear unrelated to the problem, an examination of the particular behaviour of the MultiNet SMTP support around these errors would appear in order.
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