Tips for fixing common problems….-Server replied: 421 Unexpected failure, please try later

Tips for fixing common problems….-Server replied: 421 Unexpected failure, please try later — If Imap returns this error, then there might be something wrong with the smtp server.  

server, Check all the /var/log/exim/mainlog (or /var/log/exim/exim_mainlog).

If Errors seen before:

failes to open /etc/virtual/pophosts for linear search: No such file or directory


touch /etc/virtual/pophosts

That would also imply that da-popb4smtp is not running, so popb4smtp would not work.  To start it, run:

service da-popb4smtp start

or FreeBSD:

/usr/local/etc/rc.d/da-popb4smtp start

Disk Usage is showing 0.00 or is too low

*** Please Note: If there you are running a VPS with a “simfs” file system, quotas usually can not be enabling with normal means.

Contact your VPS provider to enable quotas for you.

First type:

df -h

to see your partitions.
If there you have a /home partition, then your quota_partition value will be /home.
If there you have no /home partition, then your quota partition will likely be /.

In some cases, you may have a sybolic link:  /home -> /usr/home, in which case your quota_partition will be /usr.
Set the partition value here, as needed: 

DirectAdmin relies on the system quotas to return a value for how much space is being used.  DirectAdmin will run

/usr/sbin/repquota /home

Where /home is the quota_partition value set in the /usr/local/directadmin/conf/directadmin.conf file (eg, /home, / or /usr).

The command should output a large list of numbers, eg

[root@server]# /usr/sbin/repquota /home
*** The Report for user quotas on device /dev/hda3
Block grace time: 7days; Inode grace time: 7days
Block limits                File limits
User            used    soft    hard  grace    used  soft  hard  grace
root      —  417796       0       0           7446     0     0
nobody    —       4       0       0              1     0     0
bin       —   56880       0       0            510     0     0
majordomo —       8       0       0              2     0     0
diradmin  —       8       0       0              2     0     0
admin     —     200       0       0             44     0     0
user123   —     100       0       0             22     0     0
user456   —     100       0       0             22     0     0


If the “used” column is not showing anything, or users are not in the list, then you will need to run the quota-check program:


/sbin/quotaoff -a; /sbin/quotacheck -avugm; /sbin/quotaon -a;


/usr/sbin/quotaoff -a; /sbin/quotacheck -avug; /usr/sbin/quotaon -a;

If there are getting errors and no output is displaying for the repquota command, you will need to check your /etc/fstab file to make sure that it contains the rw,userquota,groupquota line beside the partition that is using the quotas.

***Very Important***:  On Linux (Redhat/Debian), it’s usrquota,grpquota, and on FreeBSD it’s userquota,groupquota.

Sample /etc/fstab (do not make yours look identical if it’s different, this is one example from a specific OS):

# Device                Mountpoint      FStype  Options            Dump    Pass#
/dev/ad0s1a             /               ext3     rw,usrquota,grpquota 1       1
/dev/ad0s1e             /tmp            ext3     rw                 2       2
proc                    /proc           procfs   rw                 0       0

In this case, the quota_partition is /.  The quota partition should be the partition that holds your users.  Generally, this will be one of /home, / or /usr.

Or there you may consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.

In that case instead of “,usrquota,grpquota”, add “,usrjquota=aquota.user,,jqfmt=vfsv0” to your fstab file.

Once the repquota program is returning a normal value, then you can run the tally to get the correct usage to show up in DirectAdmin:

echo “action=tally&value=all” >> /usr/local/directadmin/data/task.queue

This task.queue command will get picked up by the dataskq binary.

It calls the repquota command and dumps it into /home/tmp/quota-dump.
Check /var/log/directadmin/errortaskq.log for any errors with this command.
Running the tally manually for a User can also help with debugging these issues.

Information for a Support Request

If you are completely confused and are going to be contacting some support department about the issue, run these commands and paste them the full output from them:

cat /etc/fstab
df -h
/usr/local/directadmin/directadmin c | grep quota_partition
/usr/local/directadmin/directadmin c | grep use_xfs_quota
repquota `/usr/local/directadmin/directadmin c | grep quota_partition= | cut -d= -f2`
ls -lad /home/tmp
ls -la /home/tmp

Leave a Reply

Your email address will not be published. Required fields are marked *