"no data known" vrs "host not found"
admjcd
admjcd at VOLPE.DOT.GOV
Fri Mar 22 21:40:36 UTC 2002
When ever we send mail we get back these NDRs when ever the domain is not correct. Sometimes we get them when the domain is correct. Both types are "host unknown". One says "no data known" and the others say "host not found" . What is the difference between these two and why should we get the "no data known" intermittenly message when the domain does exist?
22-Mar-2002 10:11:41 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: vpndymanics.com: host not found) Size: 2827 SMTP ID: M2002032210114132056
22-Mar-2002 11:34:41 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: atc.army.mil: no data known) Size: 8490 SMTP ID: M2002032211344115470
22-Mar-2002 12:16:33 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: soucecode.com: host not found) Size: 2570 SMTP ID: M2002032212163325616
22-Mar-2002 12:20:03 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: worldnet.att.net': host not found) Size: 4033 SMTP ID: M2002032212200329724
22-Mar-2002 12:51:23 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: hua.army.mil: no data known) Size: 41681 SMTP ID: M2002032212512214595
22-Mar-2002 12:54:36 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: hua.army.mil: no data known) Size: 11271 SMTP ID: M2002032212543620425
22-Mar-2002 14:03:39 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: adf.as.sdff: host not found) Size: 3200 SMTP ID: M2002032214033928261
22-Mar-2002 14:36:03 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: attbi.com,: host not found) Size: 87882 SMTP ID: M2002032214360328071
22-Mar-2002 14:52:21 Action: Message Accepted Client: 152.122.15.110 To:
Subject: Returned mail: Host unknown (Name server: mail1.qrs.com.: host not found) Size: 15917 SMTP ID: M2002032214522032482
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