Exchange 550 5.7.1 Unable to relay

65 pts.
Tags:
550 5.7.1
Exchange 2007 error messages
Microsoft Exchange 2007
Microsoft Exchange errors
our one of the user not able to send the mail to yahoo.co.in domain from exchange

Software/Hardware used:
Exchange Server 2007.

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Try out this….
1. Try to do telnet on port 25 of yahoo and check if success sending a test email using telnet.
2. Create SMTP Connector each for Yahoo and specify there MX record IP address in the smarthost
3. Check if reverse PTR is configured
Remember, there are few domains which will not receive email from, if don’t have valid ptr record
4. If the above will not help, try eliminating ur AV
NOTE: If u r using DNS connector, then check with ISP, and Sender Policy Framework.

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  • Technochic
    Does he receive a bounce-back message when he tries? What is the message or error that he gets please?
    57,010 pointsBadges:
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