Hello, I have been searching and searching, and still haven't found a solution. I can receive emails (from every other email) and send them but only to the emails inside the server, but can't send them to outside email accounts (like outlook or gmail), this is what i got from the logs: Code: 2025-10-13T12:36:00.005829-06:00 hostname postfix/smtp[3010739]: warning: DNSSEC validation may be unavailable 2025-10-13T12:36:00.006005-06:00 hostname postfix/smtp[3010739]: warning: reason: dnssec_probe 'ns:.' received a response that is not DNSSEC validated 2025-10-13T12:36:00.035633-06:00 hostname postfix/smtp[3010739]: connect to hotmail-com.olc.protection.outlook.com[52.101.194.5]:25: Connection refused 2025-10-13T12:36:00.037616-06:00 hostname postfix/smtp[3010739]: connect to hotmail-com.olc.protection.outlook.com[52.101.68.13]:25: Connection refused 2025-10-13T12:36:00.038305-06:00 hostname postfix/smtp[3010739]: connect to hotmail-com.olc.protection.outlook.com[52.101.42.11]:25: Connection refused 2025-10-13T12:36:00.041003-06:00 hostname postfix/smtp[3010739]: connect to hotmail-com.olc.protection.outlook.com[52.101.9.1]:25: Connection refused I have set the DNS as the guide:
Your internet service provider or datacenter probably blocks port 25 outgoing. Contact the support of the company that provides internet access for this server or the datacenter where you rented that server or vserver and ask them to open port 25 outgoing in their firewall.
