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The Command Line
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36.3 List of Recipient Addresses

All command-line arguments that follow the switches (if any) are taken to be the addresses of recipients. The addresses in the list may be separated by spaces, by commas, or by both:

addr1 addr2 addr3
addr1, addr2, addr3

Certain modes specified by the -b command-line switch, such as -bp (for print the queue's contents), cause sendmail to ignore any list of recipients.

Be sure to escape any characters in addresses that have special meaning to your shell. For example, because the ! character has special meaning to the C-shell, [4] it should be escaped by preceding it with a backslash character:

[4] And its derivatives such as tcsh(1).


If sendmail expects a list of recipients and finds none, it prints the following message and exits:

Recipient names must be specified

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36.2 Command-Line SwitchesBook Index36.4 Processing the Command Line