diff --git a/docs/content/config/troubleshooting/faq.md b/docs/content/config/troubleshooting/faq.md
index 79ace0f2..aed1de4d 100644
--- a/docs/content/config/troubleshooting/faq.md
+++ b/docs/content/config/troubleshooting/faq.md
@@ -68,4 +68,9 @@ Antispam rules are managed in `spamassassin/rules.cf`.
 
 ### What kind of SSL certificates can I use?
 You can use the same certificates you use with another mail server.  
-The only thing is that we provide a `self-signed` certificate tool and a `letsencrypt` certificate loader.
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+The only thing is that we provide a `self-signed` certificate tool and a `letsencrypt` certificate loader.
+
+### I just moved from my old mail server to docker-mailserver but "it doesn't work".
+If this migration implies a DNS modification, be sure to wait for DNS propagation before opening an issue.
+Few examples of symptoms can be found [here](https://github.com/tomav/docker-mailserver/issues/95) or [here](https://github.com/tomav/docker-mailserver/issues/97).  
+This could be related to a modification of your `MX` record, or the IP mapped to `mail.my-domain.tld`.
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