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%.
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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.
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.
- Check current disk usage. In this example, /dev/mapper/IMSVA-Spool will be increased.
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- Add additional hard disk to your VM.
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- Check if the disk has been recognized by the server. In the example below, 20GB on disk (/dev/sdb) has been added.
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- Create a new partition.
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- Check if the disk has been added.
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- Reboot the server.
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- Create physical volume.
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- Run #pvscan or pvdisplay to verify the physical volume added.
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- Check the VG size. In the example below, it’s currently 59.72GB.
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- Extend “IMSVA” volume group by running “vgextend” command. In the example below, it is now 79.9 GB.
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- 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.
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- 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”.
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- Check IMSVA functionality and ensure everything works fine.
