22.3  Posting rules

In step four, rules for posting messages to the mailing list and for automatic modifications of the messages can be defined.

Creating a mailing list — posting rules

Figure 22.4. Creating a mailing list — posting rules


Member can post a message

This option specifies whether a member is allowed to post messages. You can select from the following options:

  • Allowed — messages sent to the mailing list will be delivered to all members (including the sender) immediately.

  • Moderator must approve — messages to the list address are forwarded to moderators for confirmation. The message is sent to other members only when approved by a moderator. If denied, the sender is informed.

  • Denied — members cannot post messages to the mailing list.

  • Only Moderators — only moderators are allowed to send messages to the mailing list.

Non-member can post a message

This option allows non-members to send messages to the mailing list. This feature is customized by a pop-up menu providing the following options:

  • Allowed — messages sent to the mailing list will be delivered to all members (including the sender) immediately.

  • Moderator must approve — messages to the list address are forwarded to moderators for confirmation. The message is sent to other members only when approved by a moderator. If denied, the sender is informed.

  • Denied — members cannot post messages to the mailing list.

  • Only Moderators — only moderators are allowed to send messages to the mailing list.

Note: The message will not be sent to the sender as he/she is not a member of the list.

Moderator can post a message

This option defines whether and how moderators can send messages to the mailing list. It covers the following options:

  • Allowed — use this option to deny members and non-members access for security reasons. Thus only moderators can send messages to the mailing list.

  • Moderator must approve — this option has similar function as the previous one but it provides higher security. If a sender tries to break the denial rule by using the moderator's address, the message will not be sent into the mailing list but it will be forwarded to the moderator.

  • Use rules for members/non-members — This option assigns the moderator rules for members/non-members (according to the fact whether the moderator is a member of the mailing list or not).

Notify server about sending...

Users that send messages to the list will be informed that their requests were forwarded to the list moderators. This message will be delivered to them immediately after the request reception. If this option is disabled, users will receive the report when the request is denied or when the timeout expires.

Send delivery errors to moderators

If this option is enabled, all error reports related to the mailing list will be delivered to moderators. Otherwise, only the sender of the email message will receive the error report. An example of such a report is a notification that an invalid request was sent or that an email account of a mailing list member has exceeded the disk quota set in Kerio MailServer and the message sent to the mailing list could not be delivered to the member's mailbox.

Reply-To

This item specifies which address will be used in the messages as the address for replies (the Reply-To: item in email headers):

  • Sender — the address of the original sender will be kept in the header. Responses will be sent to the original sender only. If this alternative is chosen, the message sent to the list will not be modified.

  • This list — the address of the original sender will be substituted by the list address. This means that the responses will be sent to all list members.

  • Other address — the address of the original sender will be substituted by a user defined email address. Responses to the messages can be sent to a particular person, another mailing list, etc.

  • Sender + this list — this setting enables delivery of email replies to users who are not members of the mailing lists. Two situations may arise:

    1. The user is a member of the mailing list — the reply will be delivered to the mailing list's address. The sender will obtain only one copy of the reply.

    2. The sender is not a member of the mailing list — the reply will be delivered both to the mailing list and to the sender's mailbox. Otherwise, the sender (non-member) would not receive the reply at all.

    As implied, the option is beneficial if the mailing list is available both to members and non-members.

    Note: Do not combine this option with the Hide sender's address and replace it with an address on the list option. The combination would be pointless and Kerio MailServer would not allow saving it.

Add this prefix to each subject

Prefix that will be added to subjects of each message sent to this list. When a new list is opened, its name inserted in square brackets is entered to this item automatically. The item content can be edited and it can be left blank (if it is empty, there will be no prefix added to the subject).

Note: Prefix is not added to the subject if it is already included there — for example, in responses to mailing list messages, subject usually follows this pattern:

Re: [name of the mailing list] the original subject

— if this option is disabled, the [name of the mailing list] prefix would be doubled.

Hide sender's address and...

If this function is enabled, the sender's address (the From item ) will be substituted for the list address in each email sent to the list. If the sender does not enter his/her name, the messages will be anonymous.

Note: If this option is enabled, the This list or Other address must be set in the Reply-To item.

Permit messages with an empty subject

If this option is disabled, only messages with a non-blank Subject are accepted. The decision whether to allow messages with blank subjects depends on the administrator.