Setting Per Channel Postmaster Addresses (Sun Java System Messaging Server 6.3 Administration Guide)

Sun Java System Messaging Server 6.3 Administration Guide

Setting Per Channel Postmaster Addresses

Keywords: aliaspostmaster, returnaddress, noreturnaddress, returnpersonal, noreturnpersonal

By default, the Postmaster’s return address that is used when the MTA constructs bounce or status notification messages is postmaster@local-host, where local-host is the official local host name (the name on the local channel), and the Postmaster personal name is “MTA e-Mail Interconnect.” Care should be taken in the selection of the Postmaster address—an illegal selection may cause rapid message looping and a great number of error messages.

The RETURN_ADDRESS and RETURN_PERSONAL options can be used to set an MTA system default for the Postmaster address and personal name. Or, if per channel controls are desired, the returnaddress and returnpersonal channel keywords may be used. returnaddress and returnpersonal each take a required argument specifying the Postmaster address and Postmaster personal name, respectively. noreturnaddress and noreturnpersonal are the defaults and signify that the default values should be used. The defaults are established via the RETURN_ADDRESS and RETURN_PERSONAL options or the normal default values if such options are not set.

If the aliaspostmaster keyword is placed on a channel, then any messages addressed to the user name postmaster (lowercase, uppercase, or mixed case) at the official channel name is redirected to postmaster@local-host, where local-host is the official local host name (the name on the local channel). Note that Internet standards require that any domain in the DNS that accepts mail have a valid postmaster account that receives mail. So this keyword can be useful when it is desired to centralize postmaster responsibilities, rather than setting separate postmaster accounts for separate domains. That is, whereas returnaddress controls what return postmaster address is used when the MTA generates a notification message from the postmaster, aliaspostmaster affects what the MTA does with messages addressed to the postmaster.

Table 10–12 Keywords for Sending Notification Messages to the Postmaster and Sender


Keyword	Description
Returned Message Content	Specifies Addresses on Notifications
`notices`	Specifies the time that may elapse before notices are sent and messages returned.
`nonurgentnotices`	Specifies the time that may elapse before notices are sent and messages returned for messages of non-urgent priority.
`normalnotices`	Specifies the time that may elapse before notices are sent and messages returned for messages of normal priority.
`urgentnotices`	Specify the time which may elapse before notices are sent and messages returned for messages of urgent priority.
Returned Messages	How to handle failure notices for returned messages.
`sendpost`	Enables sending a copy of all failed messages to the postmaster.
`copysendpost`	Sends a copy of the failure notice to the postmaster unless the originator address on the failing message is blank, in which case, the postmaster gets copies of all failed messages except those messages that are actually themselves bounces or notifications.
`errsendpost`	Sends a copy of the failure notice to the postmaster only when the notice cannot be returned to the originator. If `nosendpost` is specified, failed messages are never sent to the postmaster.
`nosendpost`	Disables sending a copy of all failed messages to the postmaster.
Warning Messages	How to handle warning messages.
`warnpost`	Enables sending a copy of warning messages to the postmaster. The default is to send a copy of warnings to the postmaster unless warnings are completely suppressed with a blank `Warnings-to:` header or a blank envelope `From:` address.
`copywarnpost`	Sends a copy of the warning message to the postmaster unless the originator address on the undelivered message is blank.
`errwarnpost`	Sends a copy of the warning message to the postmaster when the notice cannot be returned to the originator.
`nowarnpost`	Disables sending a copy of warning messages to the postmaster.
Returned Message Content	Specifies whether to send entire message or just headers to the postmaster.
`postheadonly`	Returns only headers to the postmaster. Restricting the postmaster copy to just the headers adds an additional level of privacy to user mail. However, this does not guarantee message security as postmasters and system managers are able to read the contents of messages using `root` system privileges, if they choose.
`postheadbody`	Returns both the headers and the contents of the message.
Returned Message Content	Specifies Addresses on Notifications
`includefinal`	Include final form of address in delivery notifications (recipient address).
`returnenvelope`	Control use of blank envelope return addresses. The `returnenvelope` keyword takes a single integer value, which is interpreted as a set of bit flags. Bit 0 (value = 1) controls whether or not return notifications generated by the MTA are written with a blank envelope address or with the address of the local postmaster. Setting the bit forces the use of the local postmaster address; clearing the bit forces the use of a blank address. Bit 1 (value = 2) controls whether or not the MTA replaces all blank envelope addresses with the address of the local postmaster. This is used to accommodate noncompliant systems that do not conform to RFC 821, RFC 822, or RFC 1123. Bit 2 (value = 4) prohibits syntactically invalid return addresses. Bit 3 (value = 8) same as `mailfromdnsverify` keyword.
`suppressfinal`	Suppress the final address form from notification messages, if an original address form is present, from notification messages.
`useintermediate`	Uses an intermediate form of the address produced after list expansion, but prior to user mailbox name generation. If this information isn’t available, the final form is used.
Returned Message Content	Specifies Addresses on Notifications
`aliaspostmaster`	Messages addressed to the user name postmaster at the official channel name is redirected to postmaster@local-host, where local-host is the local host name (the name on the local channel).
`returnaddress`	Specifies the return address for the local postmaster.
`noreturnaddress`	Use `RETURN_ADDRESS` option value as postmaster address name.
`returnpersonal`	Set the personal name for the local postmaster.
`noreturnpersonal`	Use `RETURN_PERSONAL` option value as postmaster personal name.