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Error “452 4.3.1 Insufficient system storage” in mail log and issue processing new emails in InterScan Messaging Security Virtual Appliance (IMSVA)

    • Updated:
    • 3 Jul 2018
    • Product/Version:
    • InterScan Messaging Security Virtual Appliance 9.0
    • InterScan Messaging Security Virtual Appliance 9.1
    • Platform:
    • Linux All
Summary

The following errors can be seen in the mail log:

Jun  4 18:09:00 IMSVA2 postfix/smtpd[12111]: NOQUEUE: reject: MAIL from unknown[127.0.0.1]: 452 4.3.1 Insufficient system storage; proto=ESMTP helo=  Jun  4 18:09:00 IMSVA2 postfix/smtpd[12111]: warning: not enough free space in mail queue: 471138304 bytes < 1.5*message size limit  Jun  4 18:09:00 IMSVA2 postfix/smtpd[12267]: NOQUEUE: reject: MAIL from unknown[127.0.0.1]: 452 4.3.1 Insufficient system storage; proto=ESMTP helo=  Jun  4 18:09:00 IMSVA2 postfix/smtpd[12267]: warning: not enough free space in mail queue: 471138304 bytes < 1.5*message size limit

Running “df –h” shows that the partition “/dev/mapper/IMSVA-Spool “ is 100% full. The IMSVA dashboard under Mail Queues > Partition indicates that it is already at 100%.

Full partition

Click image to enlarge.

In a sample scenario, 40,000 emails are sent at once with more than 5MB attachments each. This causes var/spool/postfix/active directory not to accept new connections.

Details
Public

To resolve this, increase the IMSVA partition, /dev/mapper/IMSVA-Spool. Note that this procedure is applicable for IMSVA installed on VMs. For the physical server, consult the server administrator.

  1. Check current disk usage. In this example, /dev/mapper/IMSVA-Spool will be increased.

    IMSVA Spool

    Click image to enlarge.

  2. Add additional hard disk to your VM.

    Add hard disk

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  3. Check if the disk has been recognized by the server. In the example below, 20GB on disk (/dev/sdb) has been added.

    Verify

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  4. Create a new partition.

    Create new partition

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  5. Check if the disk has been added.

    Verify added disk

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  6. Reboot the server.

    Reboot server

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  7. Create physical volume.

    Create physical volume

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  8. Run #pvscan or pvdisplay to verify the physical volume added.

    Check physical volume

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  9. Check the VG size. In the example below, it’s currently 59.72GB.

    Check the VG size

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  10. Extend “IMSVA” volume group by running “vgextend” command. In the example below, it is now 79.9 GB.

    Extend IMSVA volume group

    Click image to enlarge.

    Extend IMSVA volume group

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  11. Extend the logical partition by running the command below. Note that this may take a few minutes depending on the size of the disk space you added.

    Extend logical partition

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  12. Check the disk usage again by running df –h. in the example below, it is still the same as before. Run”resize2fs /dev/mapper/IMSVA-Spool”.

    Check disk usage

    Click image to enlarge.

  13. Check IMSVA functionality and ensure everything works fine.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
1120192
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