Email Connection Refused
While most of my email is received normally, at least one sender consistently receives the following when sending to [anyone]@sunsetbuilderssupply.com:
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Deferred: Connection refused by _dc-mx.e24b260c6872.sunsetbuilderssupply.com.
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old
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The sender is [name withheld]@emeryjensen.com.
Email from [name withheld]@benjaminmoore.com also is not received at sunsetbuilderssupply.com, although I do not have an error message in that case. It may only be coincidence, but both emeryjensen.com and benjaminmoore.com use the domain registrar networksolutions.com and I can find no other correspondents whose mail gets through with that domain registrar.