mirror of
https://github.com/docker-mailserver/docker-mailserver.git
synced 2024-01-19 02:48:50 +00:00
45 lines
1.7 KiB
Markdown
45 lines
1.7 KiB
Markdown
..todo.. - Please contribute more to help others debug this package
|
|
## Invalid username or Password
|
|
|
|
|
|
1. Login Container
|
|
|
|
```bash
|
|
docker exec -it <mycontainer> bash
|
|
```
|
|
|
|
2. Check log files
|
|
|
|
`/var/log/mail`
|
|
could not find any mention of incorrect logins here
|
|
neither in the dovecot logs
|
|
|
|
3. Make sure you set your hostname to 'mail' or whatever you specified in your docker-compose.yml file or else your FQDN will be wrong
|
|
|
|
## Installation Errors
|
|
|
|
1. During setup, if you get errors trying to edit files inside of the container, you likely need to install vi:
|
|
|
|
``` bash
|
|
sudo su
|
|
docker exec -it <mycontainer> apt-get install -y vim
|
|
```
|
|
## Testing Connection
|
|
I spent HOURS trying to debug "Connection Refused" and "Connection closed by foreign host" errors when trying to use telnet to troubleshoot my connection. I was also trying to connect from my email client (macOS mail) around the same time. Telnet had also worked earlier, so I was extremely confused as to why it suddenly stopped working. I stumbled upon fail2ban.log in my container. In short, when trying to get my macOS client working, I exceeded the number of failed login attempts and fail2ban put dovecot and postfix in jail! I got around it by whitelisting my ipaddresses (my ec2 instance and my local computer)
|
|
|
|
```bash
|
|
sudo su
|
|
docker exec -ti mail bash
|
|
cd /var/log
|
|
cat fail2ban.log | grep dovecot
|
|
|
|
# Whitelist ip addresses:
|
|
fail2ban-client set dovecot addignoreip <server ip> # Server
|
|
fail2ban-client set postfix addignoreip <server ip>
|
|
fail2ban-client set dovecot addignoreip <client ip> # Client
|
|
fail2ban-client set postfix addignoreip <client ip>
|
|
|
|
# this will delete the jails entirely - nuclear option
|
|
fail2ban-client stop dovecot
|
|
fail2ban-client stop postfix
|
|
``` |