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Topic: Connection timed out

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- iRedMail version 1.6.3
- Deployed with downloadable installer
- Debian 11
- Store mail accounts MySQL
- Web server Nginx
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I's facing this issue in my Mail logs:
postfix connection timed out

- I use 587 in Dovecot
- Hosting at Hetzner

Port 25 block by Hetzner or by iRedmail firewall?

Best

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