==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.5-1
- Linux/BSD distribution name and version: Debian 8 Jessie
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- Related log if you're reporting an issue:
====

Hi,
I have a really strange problem that I want to check if anyone else has seen. A user didn't recieve an mail this morning, where all the other ones in the same mailinglist did. So I've checked and the strange thing is that both in mail.log and dovecot-lmtp.log, I can see that the mail was delivered. But if I check the users mailbox (locally on the server), the mail is not there. So I want to find something that states why the user couldn't get the mail.

Any suggestions on logs that you can read for this? I can also point out that the mails are stored in a Gluster share which is replicated between three servers. No one has the mail. And I've checked the Gluster logs for errors, haven't found anything yet. I'm using gluster version 3.8.3.

Thanks in advance!