Limits

NOTE: In most options, value of 0 means unlimited.

The following domain limits are checked regardless of any user-level limits you have set. For example, if you have a domain Disk quota limit set to 100MB and set a user mailbox size to 500MB it will be capped at 100MB (assuming no other mailboxes are using part of the 100MB for the domain).

NOTE: Most of fields are active only if the appropriate domain, user or expiration limits are enabled upon the Global Settings – Domains tab.

domain_limits_domain

Field	Description
Domain admin account limit	Limits the number of user accounts that can be defined in this domain by a domain administrator. This number does not include other account types (mailing lists, catalogs, etc.).
Disk quota	Limits the amount of disk space that this domain will use. Input a value and select Kilobytes, Megabytes or Gigabytes from the dropdown box. Once this amount is exceeded no further messages will be accepted by the domain, a 4xx temporary error is issued and the sending server should retry after a period of time. Temporary errors showing can be changed via API. The appropriate variable is c_mail_smtp_other_fullmailboxpermanenterror.
Send out data limit per day	Select an amount of data this domain can send out in one day.
Send out messages limit (#/Day)	Specify a maximum number of messages that this domain can send in one day.
Disable login to this domain	Stops all users from logging in to this domain. This option is only available if the Use domain limits option is checked in Global Settings – Domains is checked.

domain_limits_users

Field	Description
NOTE	The following limits for users in a domain are only accessible if the Use domain limits option is checked in Global Settings – Domains. These limits are only checked if the corresponding limit in <user> – Limits is set to zero or not enabled – this applies for the <user> – Limits – Account size feature. In the case some user has set a different value (differing form 0), this setting (i. e. user level) is used as it has higher priority.
Account size	Limits the size of a user's mailbox. Input a value and select Kilobytes, Megabytes or Gigabytes from the drop-down box. Once exceeded no further messages will be accepted for that user.
Max message size	Limits the size of ANY message SENT by a user. Input a value and select Kilobytes, Megabytes or Gigabytes from the drop-down box. It is also possible to enable checking of user size limits of incoming messages using API and setting C_Mail_SMTP_Other_IncomingMessageLimits to 1. If this option is enabled and the message violates limits of any of the recipients, the whole message is rejected with a SMTP permanent error. Be aware that all attachments are Base64 Encoded, which adds a size overhead of around one third, so if you wish to limit your users to a message size of 1MB you should set the limit to 1.3MB.
Send out data limit per day	Limits the amount of data that any single user can send out in 1 day. Input a value and select Kilobytes, Megabytes or Gigabytes from the drop-down box. Once a user exceeds the limit no further messages will accepted from that user. It should be noted that a message sent to multiple recipients will be counted for each recipient, i.e. a 1MB message sent to 10 recipients will be counted as 10MB towards the limit. NOTE: Local emails are not included.
Send out messages limit (#/Day)	Limits the number of messages that a single user can send out in one day. Once exceeded no further messages will be accepted from that user. It should be noted that a message sent to multiple recipients will be counted as 1 message for each copy, i.e. a message sent to 20 users counts as 20 messages towards the limit. NOTE: Local emails are not included. NOTE: This feature can be used as an anti-spam security measure. Defining a reasonable day message limit (say hundreds) can prevent account abuse for sending spam.

domain_limits_expiration

The Expiration feature allows you to define an expiration date for the domain. When a domain expires, only the login to the domain is disabled, you can still perform other actions on the domain.

Field	Description
Expiration on	Specifies the date on which the domain will expire.
Notify before expiration	You have the option to notify the domain administrator before the actual expiration – specify the number of days before expiration that the message should be sent. NOTE: If no domain administrator email is specified (<domain> – Domain – Administrator – E-mail), then the server administrator (the same field of your primary domain) will be notified. The notification email will contain the domain name and the number of days until expiration.
Delete Domain when expired	If this box is checked the domain will be deleted at midnight at the end of the day it expires. All accounts and settings will be lost at this time, so use with extreme care!