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Whitelist Requirements for SMTP Services

In this chapter we have mentioned all the white-list requirements for SMTP services.

Description:

This document describes what to whitelist for successful E-Mail service delivery.

Purpose:

The purpose of this document is to describe the whitelisting requirements for SMTP E-Mail services.

 

DNS Domain Modification:

When an E-mail message is sent by a domain where the sender is different than the SMTP server’s domain, it will report out as a softfail through MIME headers. Some clients prevent E-mails which report a softfail from coming through their SMTP server. To validate the client’s domain as a valid sender for our SMTP servers, thus preventing a softfail, the following DNS modifications are needed:

 

1.      Update domain’s root TXT SPF record by adding: include:_spf.mitracloud.com

 

 

Firewall Filter Rule: 

Blocked Notifications

There are features in TeamConnect which send notification emails on behalf of a user to other users.  For example, User A assigns User B to a matter: TeamConnect will send a notification of that assignment using "usera@company.com" as the sender email address.  Many corporate firewalls will flag these emails as using a spoofed email address and will block them.  In order to allow these emails to reach their intended recipients, you may need to whitelist the IP addresses of Mitratech mail servers.  

Following are the IP addresses that need to be whitelisted. A new tcp protocol rule for the following addresses may be required:

 

mailod.mitracloud.com

166.78.81.73

US-Only

Prod

maildw.mitracloud.com

98.129.166.181

US-Only

Non-prod

maill3.mitracloud.com

94.236.35.193

UK-Only

Prod

maill5.mitracloud.com

162.13.228.166

UK-Only

Non-prod