I need a solution
We’re having issue delivering to at least some accounts using MessageLabs filtering.
We have recently switched IPs when hosting moved our server, but have maintained a positive reputation and do not appear on any blacklists.
Example failed response -
The mail system
: host cluster4a.us.messagelabs.com[85.158.139.103]
said: 421 Service Temporarily Unavailable (in reply to RCPT TO command)
Return-Path: Received: from mail.ajj.com (26.58.197.104.bc.googleusercontent.com [104.197.58.26])
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