1. Check services running. Postfix/Dovecot running?
2. Check if you have any firewall there? As it seems not the case.
3. Check your ISP is not blocking the ports.
2. Check if you have any firewall there? As it seems not the case.
3. Check your ISP is not blocking the ports.
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Freelance AWS Certified Architect & SysOps// DevOps
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How to ask
Freelance AWS Certified Architect & SysOps// DevOps
10$ free to start your VPS