MailRoute Support
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Articles
Recent activity by MailRoute Support-
UCEProtect Blacklists
At some point you may have received an error message that an email has been blocked from going to recipient with the following message: 554 5.7.1 Service unavailable; Client host [199.89.1.15] bl...
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Blocklisting/Allow listing Isn't Working! A Troubleshooting Guide
If you're receiving emails from sources you have previously Blocklisted, or not receiving emails from sources you've put in your Allow list, there may be some factors to look into. Here are...
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Microsoft Office 365, Exchange Online, and Microsoft Office 365 Government/GCC High Setup Configuration
If you configured Office365 prior to September 2024, you should update your configuration there.If you configured Office365 prior to January 2026, you should consider disabling DirectSend (see Ste...
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Gmail and Google Rejecting Email with Missing or Incorrect SPF records - March 3, 2022
It appears that Google has increased requirements for email delivery, particularly with SPF settings. Emails are being rejected from domains that do not have SPF records or violate SPF. We recommen...
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Implementing SPF for the MailRoute Outbound/SmartHost Service
Setting Your SPF Record If you use the MailRoute Outbound/SmartHost Service, you need to be sure you have an proper SPF record for your domains. What's an SPF record? SPF defines a list of the ...
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How to Forward an Email as an Attachment
In order to fully analyze the message that made it through our filters, we ask that you send the email exactly as you received it. The intact headers and body must not be changed or modified in ...
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Email Server SMTP Errors
To assist in troubleshooting commonly seen email server errors we have created a list of error codes and next steps to fix the issue. 421 Unexpected failure, please try later: Error on the emai...
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Website Submission Form Troubleshooting
Unfortunately, it's very common for web developers who write scripts for submission forms to send email with the SMTP envelope "MAIL FROM" address set to the address provided by the user who submit...
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Microsoft Exchange 2016 and 2019
Before you configure the connectors: 1. Make sure that under the Delivery in the MailRoute Control Panel, select Outbound Servers. Enter the IP addresses of each of your email servers. 2. Set you...
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Implementing DKIM for the MailRoute Outbound/SmartHost Service
MailRoute requires the use of DKIM, a system designed to detect email spoofing. DKIM verifies that an email sent from a domain is in fact sent by the owner of that specific domain. The idea beh...