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MailRelay
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Articles under mailRelay
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INFO: RBL Listing Policy
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FAQ: mailRelay service setup
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INFO: mailRelay Deliverability with SPF, DKIM and DMARC
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INFO: Why is my email being bounced with error "550 5.7.1 Message rejected due to content restrictions" ?
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FAQ: 421 4.4.2 Message submission rate for this client has exceeded the configured limit
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TECH: 550-Requested action not taken: mailbox unavailable 550 invalid DNS
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INFO: Improving the deliverability of your email
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FAQ: What is the maximum email size that I can send?
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INFO: Some file types are blocked
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552 MS-Office file containing VBA macros found inside of the email
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INFO: mailRelay SPF records
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INFO: mailRelay SPF records
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INFO: How to configure an Exchange 2010/2013/2016 Send-Connector to send via a smarthost
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INFO: '500 Firewall Error' appears in NDR messages when sending via the mailRelay service
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INFO: DKIM Signing setup for mailRelay
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INFO: mailRelay IP address blocks
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INFO: SMTP Response codes
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