Shulou(Shulou.com)06/02 Report--

Restrictions on sending and receiving messages

The function of banning big mail:

Limiting the size of mail sent and received by users can avoid the rapid increase in the load of the mail server due to the submission of mail that is too large, resulting in the overload of the server and affecting the whole mail system. In addition, to limit the size of receiving mail, the more critical role is to prevent the external mail system from maliciously sending large amounts of mail to cause DOS*** or spam to the mail system.

Organizational configuration

Manage the size of global mail sent and received within the organization

Organization global settings: * * Organization configuration * *-> * * Hub Transport * *-> * * Global Settings * *-right-click * * Transport Settings * *-Properties

User configuration

Manage the size of messages sent and received by a single user

User settings: * * recipient configuration * *-> * * mailbox * *-> * * Mail flow Settings * *-> * * Mail size limit * *

Connector configuration

Control the size of sending and receiving messages through receive and send connectors

Send connector settings: [organizational configuration]-[Hub Transmission]-[send Connector]

Receive connector settings: [server configuration]-[Hub Transmission]-[receive Connector]

Because the receiving connector and sending connector directly control the transmission of mail by the server, the mail sent and received through it must comply with the set message size. So the actual email sending and receiving size constraints are:

The intersection of the connector sending and receiving message size limit and the global (single user mailbox) sending and receiving message size limit, that is, which value is smaller and which value follows.

Principles for limiting the size of mail delivery:

1. When using MAPI connection, the client will be limited by the organization global limit, send connector limit, receive connector limit, user mailbox send and receive size limit, and OWA (Web.config) upload and download size limit.

two。 The transmission size or reception size of the user depends on the setting of the transmission or reception size limit of the user's mailbox. If the default is maintained, it is determined by the minimum limit values of the organization global limit, the send connector limit and the receive connector limit.

3. For Internet messages, if you use an edge connection, it is also affected by the edge server, and you need to change the settings of both the Hub Transport server and the edge server.

4. The user's send and receive restrictions override the organization's global restrictions, but obey the send connector (override the receive connector limit)

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