Roundcube says out of disk space

Community Support
1

So emails can’t be sent nor can email drafts be saved and its all because it says its out of disk space which isn’t true whatsoever. See info below:

System information as of Sat Feb 7 10:30:58 PM CST 2026

System load: 0.21
Usage of /: 71.2% of 435.53GB
Memory usage: 15%
Swap usage: 0%
Temperature: 54.0 C
Processes: 212

Mind you I have two 500 GB SSD’s in this server, and this is unrelated to HestiaCP but for some reason it only sees the first SSD. Not asking you to help me solve that of course, but idk, maybe somehow the email server of HestiaCP needs more than 30% of my drive? That would be odd though. The quota is unlimited I will also mention.

2

No, it needs exactly the space used by your users.

Could you please show the output of these commands?

df -h
mount
repquota -aus | grep -E -v '^\*|^\s|^--|^Block.*grace' | sed -E 's/User\s{1,}used/User status used/' | column -t
3

After running the commands, I found on the last one that somehow the account that I was investigating was using more storage than the account maximum, somehow. 1030 Mb out of 1000 Mb quota. I don’t know how it happened, I didn’t know email storage factored into website quotas, but it did so now I know. I’m going to increase the quota and I’ll let you know if it worked.

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4

So after checking, turns out that now emails sent will save in the “Sent” folder but emails aren’t being received nor are they being sent. Another client’s email works fine so I’m not sure what’s wrong here. I just copied the MX and TXT records to Cloudflare since my client uses CF DNS.

5

Did you put a proxied hostname in the MX record? That’s the most common cause of what you describe.

The Cloudflare proxy only passes HTTP/HTTPS traffic. Hostnames that use other protocols need to be set as DNS Only.

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7

Hey. I did make sure it was sent to DNS-only. Please see below.

image
image1443×677 68.8 KB

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8

Exim is rejecting all connections to your server because you are using a DNS resolver not authorized by Spamhaus.

=== Trying mail.rooster.games:25...
=== Connected to mail.rooster.games.
<-  220 Ubuntu-2404-noble-amd64-base
 -> EHLO test
<-  250-Ubuntu-2404-noble-amd64-base Hello 1.red-203-0-113.staticip.rima-tde.net [203.0.113.1]
<-  250-SIZE 52428800
<-  250-8BITMIME
<-  250-PIPELINING
<-  250-PIPECONNECT
<-  250-CHUNKING
<-  250-STARTTLS
<-  250 HELP
 -> MAIL FROM:<[email protected]>
<-  250 OK
 -> RCPT TO:<[email protected]>
<** 550-Rejected because 203.0.113.1 is in a black list at zen.spamhaus.org
<** 550 Error: open resolver; https://check.spamhaus.org/returnc/pub/2a01:4f8:0:a104::add:1d/
 -> QUIT
<-  221 Ubuntu-2404-noble-amd64-base closing connection

Take a look to this post to check a few options to fix it:

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