fastmail setup fail

Question

I installed odoo 19 on digitalOcean (Ubuntu). I've setup IMAP server. It works fine.
I'm trying to set up an SMTP server to send email. I've completed all the necessary configuration steps, but I'm getting a timeout error when checking the test connection.
//odoo logs  2026-02-24 14:12:49,054 1 WARNING odoo odoo.http: No response received. Check server address and port number.  timed out

#: nc -zv smtp.fastmail.com 465
Connection to smtp.fastmail.com port 465 [tcp/urd] succeeded!

Using the sa

Jaroslav · Answer

Guys,  Ogtay ALiyev,  Kunjan Patel! I'm so thankful. You both were correct:
I had closed port by default!
sudo ufw allow out 465/tcp
sudo ufw allow out 587/tcp
That helps on the first stage

Second problem is in Digital Ocean! It blocks default SMTP ports. How to check:
If this command hags then you have closed port by provider
openssl s_client -connect smtp.gmail.com:465 -quiet

Thanx to FastMail they have SMTP proxy which works on 80/443 port
smtps-proxy.fastmail.com
Thank you so much!

Ogtay ALiyev · Answer

DigitalOcean often blocks outbound SMTP traffic by default.
Even if:
nc works
Sometimes encrypted SMTP traffic gets filtered silently.
Check in:
DigitalOcean Dashboard → Networking → Firewalls
Make sure:
Outbound traffic is allowed
No egress rule blocking 465 or 587
Also check:
sudo ufw status
If UFW is active, ensure outbound is allowed:
sudo ufw allow out 465/tcp
sudo ufw allow out 587/tcp

Kunjan Patel · Answer

Hello Jaroslav,
I hope you are doing well
*Increase Odoo worker timeout in odoo.conf:
*limit_time_real = 300   *# Try in command line*
limit_time_cpu = 300
If still fails, try port 587 + STARTTLS — DigitalOcean often throttles port 465.
I hope this information helps you
Thanks & Regards,
*Kunjan Patel*

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