The first thing you should do is check that there is enough free disk space on the disk where VPOP3 is installed. VPOP3 requires a certain amount of free space before it will allow new messages to be sent, so the disk might not be totally full, but VPOP3 will still report that there is insufficient disk space when you try to send a new message. This buffer zone is designed to help prevent the disk totally filling up, which can cause lots of bigger problems!
If there is plenty of free disk space on the disk where VPOP3 is installed and VPOP3 is still reporting an insufficient disk space error, then check that the error is being generated by VPOP3, and not by your ISP. VPOP3 will report errors that have been generated by your ISP and it's easy to assume the VPOP3 machine is at fault when it is not. As a general rule,
452 4.3.1 Insufficient Disk space to send mail
. In essense, VPOP3 is saying that it tried to send the mail but the ISP was unable to accept it due to a lack of disk space.You can turn off the disk space checks in VPOP3, but this is not recommended - if the disk fills up and disk space checking is turned off, you may lose messages and/or VPOP3 settings! To turn off the disk space checks in VPOP3:
Go to Settings → Misc Settings → Disk/Memory Checking
and untick Enable disk space checking
.
Go to the Utilities → Misc Settings
page in the VPOP3 settings and untick 'Enable disk space checking'.
You will have to edit the registry manually as below:
Go to Settings → Misc Settings → Disk/Memory Checking
. There is a section called Disk Space Checking. This has the 4 different disk space checking settings, along with an explanation of what they mean.
Go to the Utilities → Misc Settings
page in the VPOP3 settings. There is a section called Disk Space Checking. This has the 4 different disk space checking settings, along with an explanation of what they mean.
You will have to edit the registry manually as below: