Thunderbird Not Connecting to SMTP on Mailserver

I'm setting up a postfix / dovecot mailserver on my linode.

I can read email on this from Thunderbird, but can't reply. Reply efforts fail on SMTP timeout.

Thunderbird is configured to use port 25, SSL/TLS, normal authentication (but I've tried none).

None of the efforts are even appearing in the logs on the server.

Any thoughts on what I'm doing wrong here?

2 Replies

It looks like my ISP maybe blocking port 25. I can telnet to port 25 from the linode itself, but not from my remote computer.

How do I revise configuration to connect to SMTP over the default port?

Don't have enough time to give a full answer, but look around for enabling the submission port (587) for your mailserver.

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