Why Axigen Mail Server log gives the error of Unable to perform STARTTLS and how to solve it?

Axigen by default initiate a TLS connection with the target mail server. When the target mail server does not accept TLS, Axigen will mark the mail message as Relay error with the error of Unable to perform STARTTLS.

It is suggest to leave this behaviour as is, but in case there is an exception that you want to send mail to that mail server you need to ignore TLS for the target. In order to do so login to Axigen webadmin interface and:

1- Navigate to Security & Filtering -> Acceptance & Routing -> Advanced Settings

2- Click the Add Acceptance / Routing Rule button

3- Write a suggestive name for the rule like disable_tls_example_com

4- In the Conditions section add the following two conditions:
- Recipient -> Domain -> add the condition -> select 'Is' from the combo box -> write Name_of_the_domain (example.com) in the combo box.
- Delivery -> Relaying mail -> click add the condition

5- Select at the top of the Conditions section For incoming messages that match -> ALL of the conditions below (instead of the default `ANY of the conditions below`)

6- in the Actions section select Settings -> Allow StartTLS -> add the action. DO NOT tick the check-box next to Allow StartTLS.

Now click SAVE CONFIGURATION button. Your're done and you should see something like below in your axigen log file:

Set recipient <info@example.com> state to SENT

#mailserver #axigen #TLS #STARTTLS

Do you need a full-featured open source mail server?

Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers. Postal was developed by aTech Media to serve its own mail processing requirements and we have since decided that it should be released as an open source project for the community.

Read more about it on github page:
- https://github.com/atech/postal

#github #mailserver #mail #mailgun #sendgrid #postmark #postal #open_source