In Progress [BWG-823] LMTP 451 4.3.0 Temporary Internal Error on KVM

victortin

Member
Oct 17, 2015
9
2
3
Nigeria
cPanel Access Level
Root Administrator
T=dovecot_virtual_delivery defer (-44): LMTP error after RCPT TO:<[email protected]>: 451 4.3.0 <[email protected]> Temporary internal error

please how can i fix this issuee, this problem started after cpanel update to v80.0.18
Hi @shaun,

Can you access one of the affected servers and look at the /etc/fstab file to see if the root filesystem (e.g. "/") is associated with a device that doesn't exist? For instance, many of the affected systems we've seen have an entry like this in their /etc/fstab file despite /dev/simfs not existing as a device:

Code:
/dev/simfs / reiserfs rw,usrquota,grpquota 0 0
Here's a command you can use to help identify if an invalid device name is utilized:

Code:
diff -u /etc/mtab /proc/mounts
Thank you.
i never had issue with mail my other servers, one of my server is experiencing this issue now. since i update to cpanel vv80.0.18

Hello Everyone,

I've marked this thread as SOLVED with cPanel & WHM version 80 now in the RELEASE build tier. Let us know if any additional issues are noticed after upgrading to version 80.

Thank you.
 
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victortin

Member
Oct 17, 2015
9
2
3
Nigeria
cPanel Access Level
Root Administrator
thank you for your reply, i ran
diff -u /etc/mtab /proc/mounts
it returns nothing, any see image the mtab content\

and my df -u screenshot


i think this below does not exits.
ext3 defaults,noauto 0 0

#
# /etc/fstab
# Created by anaconda on Mon Feb 4 08:08:06 2019
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=0e02f562-d911-4cc1-b4cc-24cbff6f2962 / ext4 noatime,usrjquota=quota.user,jqfmt=vfsv0 1 0
UUID=f77f4d60-1236-4499-8fbf-1f2afe50131c /boot ext4 defaults,noatime 1 0
/usr/tmpDSK /tmp ext3 defaults,noauto 0 0
df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 25G 0 25G 0% /dev
tmpfs 25G 0 25G 0% /dev/shm
tmpfs 25G 41M 25G 1% /run
tmpfs 25G 0 25G 0% /sys/fs/cgroup
/dev/sda2 1.2T 408G 713G 37% /
/dev/sda1 969M 261M 643M 29% /boot
/dev/loop0 3.9G 8.5M 3.7G 1% /tmp
tmpfs 4.9G 0 4.9G 0% /run/user/0
tmpfs 4.9G 0 4.9G 0% /run/user/1514

- Removed -

sorry the image did not upload

See attached files the screenshot.
 

Attachments

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cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,205
363
Hello @victortin,

Can you search /var/log/exim_mainlog for an email address affected by this issue and post the output here? Here's an example of a command to search the Exim log:

Code:
exigrep [email protected] /var/log/exim_mainlog
Replace "[email protected]" with the email address of an affected user and let us know the output logged for one of the email transactions associated with the reported error message. Ensure to paste the output in CODE tags and replace real domains and IP addresses with examples.

Thank you.
 

victortin

Member
Oct 17, 2015
9
2
3
Nigeria
cPanel Access Level
Root Administrator
Thank you for your response, if you want me to send root details i will gladly do that, i just want this issue to resolve. or you can tell me what to output or do.
when i ran this exigrep [email protected] /var/log/exim_mainlog
Code:
2019-06-19 17:19:53 1hdVME-0021jQ-OP == [email protected] R=virtual_user T=dovecot_virtual_delivery defer (-52): Retry time not yet reached
2019-06-19 17:26:24 1hdVME-0021jQ-OP == [email protected] R=virtual_user T=dovecot_virtual_delivery defer (-52): Retry time not yet reached
2019-06-19 17:58:36 1hdVME-0021jQ-OP == [email protected] R=virtual_user T=dovecot_virtual_delivery defer (-52): Retry time not yet reached
2019-06-19 18:26:24 1hdVME-0021jQ-OP == [email protected] R=virtual_user T=dovecot_virtual_delivery defer (-52): Retry time not yet reached
When i run deliver now i get this
Code:
LOG: MAIN
cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1hdrtg-004s0Z-1V
delivering 1hdrtg-004s0Z-1V
LMTP<< 220 srv200.example.com Dovecot ready.
LMTP>> LHLO srv200.example.com
LMTP<< 250-srv200.example.com
LMTP<< 250-8BITMIME
LMTP<< 250-CHUNKING
LMTP<< 250-ENHANCEDSTATUSCODES
LMTP<< 250-PIPELINING
LMTP<< 250-STARTTLS
LMTP<< 250 VRFY
LMTP>> MAIL FROM:<[email protected]>
LMTP<< 250 2.1.0 OK
LMTP>> RCPT TO:<[email protected]>
LMTP<< 451 4.3.0 <[email protected]> Temporary internal error
LMTP>> QUIT
LMTP<< 221 2.0.0 Bye
LOG: MAIN
== [email protected] R=virtual_user T=dovecot_virtual_delivery defer (-44): LMTP error after RCPT TO:<[email protected]>: 451 4.3.0 <[email protected]> Temporary internal error
When i can chage the package to unlimited mail will be delivered.

below is my /proc/mounts filecontent
Code:
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime,gid=1000,hidepid=2 0 0
devtmpfs /dev devtmpfs rw,nosuid,size=25663988k,nr_inodes=6415997,mode=755 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0
tmpfs /sys/fs/cgroup tmpfs rw,nosuid,nodev,noexec,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/rdma cgroup rw,nosuid,nodev,noexec,relatime,rdma 0 0
cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
configfs /sys/kernel/config configfs rw,relatime 0 0
/dev/sda2 / ext4 rw,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=18224 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,relatime,pagesize=2M 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
mqueue /dev/mqueue mqueue rw,relatime 0 0
/dev/sda1 /boot ext4 rw,noatime 0 0
/dev/loop0 /tmp ext3 rw,nosuid,noexec,relatime 0 0
/dev/loop0 /var/tmp ext3 rw,nosuid,noexec,relatime 0 0
/dev/sda2 /usr/share/cagefs-skeleton ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
devpts /usr/share/cagefs-skeleton/dev/pts devpts rw,nosuid,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /usr/share/cagefs-skeleton/dev/shm tmpfs rw,nosuid 0 0
/dev/sda2 /usr/share/cagefs-skeleton/lib ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/lib64 ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/include ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/lib ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/lib64 ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/apache/domlogs ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/3rdparty/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/3rdparty/lib ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/3rdparty/perl ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/3rdparty/php ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/3rdparty/share ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/Cpanel ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/sys_cpanel/boxtrapper-message ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/var ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/local/cpanel/whostmgr/docroot/cgi/softaculous ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/l.v.e-manager/cl.nodejs ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/l.v.e-manager/cl.python ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/locale ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/man ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/terminfo ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/usr/share/zoneinfo ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/cpanel/ea4 ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/lib/mysql ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/lib/proxyexec/cagefs.sock ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/lib/spamassassin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
tmpfs /usr/share/cagefs-skeleton/var/run/dbus tmpfs rw,nosuid,mode=755 0 0
tmpfs /usr/share/cagefs-skeleton/var/run/nscd tmpfs rw,nosuid,mode=755 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/spool/at ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/www/cgi-bin ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/www/html ext4 rw,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php73/root/usr/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php73/root/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php56/root/usr/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php56/root/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php71/root/usr/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php71/root/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php72/root/usr/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php72/root/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php70/root/usr/bin ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/opt/cpanel/ea-php70/root/etc ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
/dev/sda2 /usr/share/cagefs-skeleton/var/lve/lveinfo.ver.cagefs ext4 ro,nosuid,noatime,jqfmt=vfsv0,usrjquota=quota.user 0 0
proc /usr/share/cagefs-skeleton/proc proc rw,nosuid,relatime,gid=1000,hidepid=2 0 0
systemd-1 /usr/share/cagefs-skeleton/proc/sys/fs/binfmt_misc autofs rw,nosuid,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=18224 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0
tracefs /sys/kernel/debug/tracing tracefs rw,relatime 0 0
tmpfs /run/user/0 tmpfs rw,nosuid,nodev,relatime,size=5135080k,mode=700 0 0
 
Last edited by a moderator:

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,205
363
Hello @victortin,

When i can chage the package to unlimited mail will be delivered.
Are you sure the individual email account, or the cPanel account itself, is not at it's disk quota limit?

Thank you for your response, if you want me to send root details i will gladly do that, i just want this issue to resolve.
We don't request or accept login credentials on the cPanel Forums as a security precaution but you're welcome to submit a support ticket if you'd like us to access your system to see what's happening for that account. If you do open a ticket, post the ticket number here and I'll update this thread with the outcome once it's closed.

Thank you.
 

victortin

Member
Oct 17, 2015
9
2
3
Nigeria
cPanel Access Level
Root Administrator
The issue has been resolve by temporary workaround from cpanel support i await for update. see solution below.

took the liberty of applying the temporary workaround by running these commands:

# cp -av /var/cpanel/templates/dovecot2.3/main.{default,local}
# sed -i '/^lmtp_rcpt_check_quota =/{s/yes/no/}' /var/cpanel/templates/dovecot2.3/main.local
# /scripts/builddovecotconf
# /scripts/restartsrv_dovecot

Your server is now able to receive email without issue:
 
Last edited by a moderator:

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,205
363
Hello @victortin,

Thank you for sharing the temporary workaround. Here's the link to the thread where the cause of this issue is discussed:

SOLVED - [CPANEL-26002] LMTP errors after upgrading to cPanel & WHM Version 78

It's important to note that case CPANEL-26002 does not address the issue for servers operating under the KVM environment. A separate case (BWG-823) is open KVM servers. I'll monitor this case and update this thread with more information as it becomes available.

Thank you.
 
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