self-hosted/docker-mailserver
1
0
Fork 0
mirror of https://github.com/docker-mailserver/docker-mailserver.git synced 2025-08-09 23:07:35 +02:00
Code Issues Releases Activity

Added information about stealth blocks on port 25

Browse Source
This commit is contained in:
Trangar
2020-07-15 08:32:38 +02:00
parent 68e9e5dd36
commit c6f1af4fff
1 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
docs/content/config/troubleshooting/debugging.md
View File

@ -51,4 +51,12 @@ fail2ban-client set postfix addignoreip <client ip>
# this will delete the jails entirely - nuclear option
fail2ban-client stop dovecot
fail2ban-client stop postfix
```
```
## Send email is never received
Some hosting provides have a stealth block on port 25. Make sure to check with your hosting provider that traffic on port 25 is allowed
Common hosting providers known to have this issue:
- [Azure](https://docs.microsoft.com/en-us/azure/virtual-network/troubleshoot-outbound-smtp-connectivity)
- [AWS EC2](https://aws.amazon.com/premiumsupport/knowledge-center/ec2-port-25-throttle/)