July 4, 2009 06:12am pdt

1. war1 81,553
2. apache09 24,950
3. Mestha 17,250
4. jar3817 15,250
5. KeremE 11,520
6. Sembee 11,000
7. moorhous... 10,710
8. DaveHowe 10,000
9. BlueDevilF... 9,000
10. gupnit 8,900
11. tigermatt 8,610
12. garycutri 8,525
13. x-sam 8,075
14. sjef_bos... 7,600
15. b0lsc0tt 6,500
16. peakpeak 6,000
17. jason1178 5,500
18. Mike_Car... 5,000
18. mtz1of4 5,000
18. fgrushev... 5,000
21. rid 4,740
22. DMTechG... 4,400
23. jcimarron 4,150
24. jjmck 4,000
24. Longtime... 4,000

1. war1 1,033,254
2. Sembee 678,237
3. PsiCop 220,821
4. rid 171,977
5. BlueDevilF... 126,426
6. peakpeak 70,738
7. jar3817 68,076
8. apache09 58,829
9. waybadm... 56,544
10. redseatec... 56,450
11. mass2612 53,500
12. rakeshmig... 52,922
13. tigermatt 50,499
14. moorhous... 49,842
15. TechSoEasy 44,025
16. kieran_b 43,633
17. BudDurland 43,034
18. b0lsc0tt 38,339
19. grblades 37,535
20. SysExpert 31,533
21. mtz1of4 31,172
22. MrLonandB 30,938
23. kristinaw 30,664
24. ormerodru... 29,752
25. Frankco 29,593

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11/03/2005 at 03:56PM PST, ID: 21618834

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7.0

relaying denied IP name lookup failed

Asked by res_89 in Email Software

Tags: lookup, name, ip, failed, relaying

I've been through every question on the board about the 5.7.1 NDR but the solutions are not working.

Here's the skinny:

I am in the military and my unit sets up deployable servers during contingency operations. We have a new set of equipment running windows 2003 enterprise server and Exchange 2003 standard server. We have sidewinder 5.2.1 firewall and a router configured for 3 subnets 192.168.14.0, 192.168.11.0 and 192.168.20.0. The 20 subnet has an external DNS server (not a fake root host) which has info for each of the external burbs of the firewalls (14.0 and 11.0) and MX records for both.

When we try to send mail from the outlook client on one domain to a client on the other domain we recieve a NDR. specifically
SMTP 550 5.7.1.
You do not have permission to send to this recipient
relaying denied IP name lookup failed (IP of the mailserver)

When I do an nslookup and put in IP addresses, they resolve for all of the machines on my networks. So I don't understand at what point the IP name lookup failed.

I've also ensured that the relay access list is on authentication and that every computer on the mail server's class B is on there (192.168.0.0) and it still denies.

since this is training for what we do out in the field, we were following the manuals sent from the government contracted corporation, however, I really want to get this to work.

I've gone through all the common aspects of the exchange portion and I was thinking it might have something to do with the firewall, but I have no way of tracking down where the mail goes.

Any help would be appreciated.

Chris

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20090624-EE-VQP-63

relaying denied IP name lookup failed

Asked by res_89 in Email Software

Tags: lookup, name, ip, failed, relaying

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