troubleshooting Question

550 5.7.1 Cannot relay

Avatar of jerrywalk1
jerrywalk1 asked on
ExchangeWindows Server 2008
18 Comments3 Solutions813 ViewsLast Modified:
I have an exchange 2007 sp1 running on windows 2008. I am currently having the following problem:
1. There is 1 domain that is giving me a delay error with 550.5.7.1. I can send emails both internally and externally with no problems except to this 1 email domain.
2. The email eventually gets sent after a some hours.
3. I tried to telnet to the user and recieved the 550 error as well. However, whenever i try to send email to anybody using telnet it gives me the 550 error.

Any ideas? mx and ptr records are all correct and I am not grey or blacklisted.
Ryan McCauley
Senior Data Architect

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