Sendmail retries sending to non-existant users


 
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Old 08-10-2007
Sendmail retries sending to non-existant users

How can i get sendmail to immediately bounce mail when the server on the other side gives a "550 unknown user" SMTP error? Currently, the outbound mail stays in the queue and is retried until our server gives up, some days later.
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mailq(1)						      General Commands Manual							  mailq(1)

NAME
mailq - Displays the contents of the mail queue SYNOPSIS
mailq [-v] DESCRIPTION
The mailq command displays a list of messages in the mail queue. The mailq command is the same as the sendmail command with the -bp option; see sendmail for more information. EXAMPLES
The mailq command lists the mail queue as shown in the following example: Mail Queue (1 request) --QID--- -Size- ---Q- Time------- --Sender/Recipient--- AA002508 3 Thu Dec 17 10:01 root The mailq -v command lists the mail queue as shown in the following example: Mail Queue (1 request) --QID--- -Size- -Priority- ---Q-Time---- -Sender/Recipient- AA002508 3 1005 Dec 17 10:01 root (Output might be formatted differently on your system.) The fields have the following meaning: Contains the message queue ID of the message. Contains the number of bytes in the body of the message (header information not included). Contains the priority of the message. Contains the date that the message entered the queue. Contains the user ID of the sender (first), and then the user ID of the receiver of the message. In this example, a message also indicates the status of the message. FILES
Contains the log file and temporary files associated with the messages in the mail queue. SEE ALSO
Commands: sendmail(8) mailq(1)