A. Delivery Rule

In the list of delivery rules, the settings for delivery rules are displayed from top to bottom.

If the condition of a delivery matches any of the delivery rules, the system uses the delivery policy defined in the matched rule to perform the delivery. The condition here means the sender and recipient groups. When the group contains a child group, its child groups are also taken into consideration.

This system adopts the first-match rule. In the first-match rule, if the specified sender and recipient addresses match addresses defined in the delivery rules in the list, the delivery rule at the top of the list applies.

If you want to send a delivery to multiple recipients, a recipient group containing all possible recipients must be selected in the delivery rule.

Examples of the application of delivery rules

To a single recipient:

Sender: Sender 1 who is a member of group A

Recipient: Recipient 1 who is a member of group B

If the delivery rules in the table below are configured, delivery rule 1 is selected by applying the first-match rule. Delivery rule 2 is not selected.

Table A‒1: Configuration example of delivery rules

No.	Sender	Recipient	Delivery policy
1	Group A	Group B	Delivery policy 1
2	Group A	Group B	Delivery policy 2

Figure A‒1: Delivery example (to a single recipient)

To two recipients:

Sender: Sender 1 who is a member of group A

Recipient: Recipient 1 who is a member of group B and recipient 2 who is a member of group C

Group hierarchy: Group D is a parent group of groups B and C.

If the delivery rules in the following table are configured, delivery rule No. 3 that contains sender group A and recipient groups B and C matches.

Table A‒2: Possible delivery rule settings

No.	Sender	Recipient	Delivery policy
1	Group A	Group B	Delivery policy 1
2	Group A	Group C	Delivery policy 2
3	Group A	Group D	Delivery policy 3

Figure A‒2: Possible delivery example (to two recipients)

If the configured delivery rules include only the rules shown in the table below, sending the delivery is impossible. The reason is that the rule containing both groups B and C as a recipient is not included in the configured delivery rules. However, a file delivery is possible from group A to group B, and also from group A to group C.

Table A‒3: Ineffective delivery rule settings

No.	Sender	Recipient	Delivery policy
1	Group A	Group B	Delivery policy 1
2	Group A	Group C	Delivery policy 2

Figure A‒3: Ineffective delivery example (to two recipients)

When a user belongs to multiple groups

The first-match rule is also applied when a user belongs to multiple groups. The order of the groups in the user setting does not matter.

The following table shows an example of a group hierarchy in which a Parent group has A, B, and C groups as its children.

Table A‒4: Example of the application of delivery rules when a user belongs to multiple groups

No.	Group sender belongs to (from top to bottom)	Group recipient(s) belongs to (from top to bottom)	Delivery rule (from top to bottom)	Rule to be applied
1	A	C	B -> C A -> C A -> B A -> A Parent -> Parent	A -> C
2	A B	C		B -> C
3	B A	C		B -> C
4	A	A B		A -> B
5	A	B A		A -> B
6	B A	B A		A -> B
7	A B	B A		A -> B
8	A B	A		A -> A
9	A	A B (first recipient) C (second recipient)		Parent -> Parent

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