This article applies to:

• Trustwave MailMarshal (SEG) 6.4.1 through 6.4.7

Symptoms:

• MMReceiver Disk Space Alert Raised
• Email message: MailMarshal Receiver has detected that the disk space has gone below the halting threshold.
• Available disk space is well above the alert threshhold.
• Disk space values reported in the warning message are incorrect, extremely large, and might be negative.

Information:

 MailMarshal 6.4 versions have a known issue with low disk checking that can cause false triggering.

To resolve this issue, upgrade to the latest version of MailMarshal SMTP. This issue was first fixed in version 6.5.

If you are experiencing problems with this feature and you cannot upgrade immediately, you can disable this check. You will still receive the notifications but the Receiver will not slow down or reject messages during this time. Remember to re-enable the check once you upgrade.

To disable the disk check:

Under HKEY_LOCAL_MACHINE\SOFTWARE\NetIQ\MailMarshal\Default\Receiver

Add the following DWORD entries if they are not present, and set the value of both to 0:

• DelayDiskMark 
• LowDiskMark

To apply the Registry changes to the email processing servers, you must

1. Commit configuration changes
2. Restart the Receiver service on each email processing server (in Configurator > Server and Array Configuration > Server Properties).

Be aware that if the server actually runs out of disk space, messages being processed could be lost.

For full details of this functionality, see Trustwave Knowledgebase article Q11699: Enhanced Low Disk Space Handling in MailMarshal SMTP 6.3 and above.

Notes:

Take due care when editing the Registry.