primetime24
asked on
Problems delivering email to icloud email accounts
I'm trying to send email from my corporate exchange email server to iCloud email addresses and it comes back undeliverable. the error is as follows
A problem occurred during the delivery of this message to this e-mail address. Try sending this message again. If the problem continues, please contact your helpdesk.
The following organization rejected your message: [17.172.34.9].
Diagnostic information for administrators:
Generating server: mail.mycompany.com
email@icloud.com
[17.172.34.9] #<[17.172.34.9] #5.0.0 smtp; 5.1.0 - Unknown address error 550-'5.7.0 Blocked - see https://support.proofpoint.com/dnsbl-lookup.cgi?ip=96.56.26.14' (delivery attempts: 0)> #SMTP#
I checked with proofpoint and our server is not blocked
A problem occurred during the delivery of this message to this e-mail address. Try sending this message again. If the problem continues, please contact your helpdesk.
The following organization rejected your message: [17.172.34.9].
Diagnostic information for administrators:
Generating server: mail.mycompany.com
email@icloud.com
[17.172.34.9] #<[17.172.34.9] #5.0.0 smtp; 5.1.0 - Unknown address error 550-'5.7.0 Blocked - see https://support.proofpoint.com/dnsbl-lookup.cgi?ip=96.56.26.14' (delivery attempts: 0)> #SMTP#
I checked with proofpoint and our server is not blocked
the error indicates that the address is unknown. verify the email address is a accurate and misspelled or anything
ASKER
I've tried with my personal icloud email address and have gotten the same results
ASKER
It's not exclusive to any one icloud email address, It's any email address affiliated with icloud
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Recommended author looks at proofpoint support for solution, since only icloud accounts are affected. closing ticket unless author reopens requiring further assistance.