If you get an error 552 Message too large - contact your administrator as soon as you try to send a message to VPOP3, then it means that the size limit in VPOP3 is set smaller than the size of the message you are trying to send.
There are two places this size limit can be set:
- On the Services -> SMTP page, check the Maximum Message Size. The default limit is about 20MB
- On the Edit User -> Permissions page for the person sending the message, check the Max Internet Outgoing Size (a value of 0 (zero) means there is no limit here)
If you get the error message emailed to you when VPOP3 tries to send a message to the ISP's email server, then it may be that the ISP has set a size limit itself (often ISPs will set a size limit of 5MB). In this case you can either try to get the ISP to increase their limit for you, or send a smaller message.
To send a smaller message:
- if you are sending several attachments, try sending them one at a time instead of all attached to one message
- try using WinZip to compress the attachments before sending them
Also note that the size of an attachment in an email is typically 33% larger than the file size of the attachment on the disk. This is because binary attachments have to be encoded using a system called BASE64 into printable characters before they can be put into an email.
In VPOP3 1.5.0 and earlier
In VPOP3 1.5.0 and earlier the settings are the same, but they are in slightly different locations.
- On the Local Services tab, click 'Configure' on the 'SMTP' line
- The individual maximum message size for each user is set on the main 'Edit User' window