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Hello! Email to a certain domain is failing with the error:
Failed Recipient: [redacted]@powerprosinc.com
Reason: Remote host said: 601 Failed to connect to the recipients mail server. No MX records were found for the 'powerprosinc.com' domain.
Status: 544 5.4.4 Host not found (not in DNS).Attempted to send the message to the following ip's:
The domain doesn't have an MX record, but SmarterMail appears to attempt to send to the primary A record (as it should).
The IP if the domain does have port 25 open as it should.
Any ideas on the reason for the bounces? Your help is appreciated.