Lotus Domino SMTP Relay

It’s not a new story, but today I had to do it again to restore our email relay successfully. so I am writing this just as a reference.
Recently we were having some issues in sending emails to various domains , in some particular case, our Public IP was blacklisted at one or two spam lists. To sort it out, we used our ISP’s SMTP (example: smtp.yoursip.com.pk)to relay mails successfully. Here is how you can add/change the relay host.

• From the Domino Administrator, click the Configuration tab and then expand the Messaging section.
• Choose Configurations.
• Select the Configuration Settings document and then click Edit Configuration.
• Click the Router/SMTP - Basics tab.
• Complete this field, and then click Save & Close:

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Field
Relay host for messages leaving the local Internet domain

As showed in the image below . . .
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To take changes take effect immediately, issue this command at domino admin client

tell router update config

To remove relay host, simply remove the smtp entry and reload config.