Unable to reach SMTP from outside custom Docker bridge network

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1

I have a Docker setup with Axigen. I have been able to login and send an email successfully. I am having trouble connecting with another application to the SMTP port. Axigen is located in a custom bridge network with port 465 forwarded to the host as well. When I try to ping from a different computer it cannot find the host. Any thoughts? TIA

2

Hi there,

Two suggestion

enable the forwarding on your ipv4
and also to configure your firewall to accept the forwarding traffic.

Regards,
Jay

3

Do you mean enable that in Docker, or on my network, or where? I have it forwarded through my router, regardless it’s unreachable outside of bridge network. Where would I look for the firewall, is it the one for the entire server?

4

Please use this as reference.

5

Thank you for pointing me to that, however, after trying both of the following, it still failed to be visible:
sysctl net.ipv4.conf.all.forwarding=1
sudo iptables -P FORWARD ACCEPT
Next steps?

6

Does anyone have any thoughts on this?

7

I am trying to connect another application located in yhe same bridge network to the SMTP server so it can send messages. From within the bridge network on an installation of linuxserver/swag I can ping the SMTP port, but the application trying to send the email gets an SMTP timeout error.