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Postfix Overview - Introduction - SCN Research

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SHOWQ(8)<br />

SHOWQ(8)<br />

Page 1 of 1<br />

NAME<br />

showq - list the <strong>Postfix</strong> mail queue<br />

SYNOPSIS<br />

showq [generic <strong>Postfix</strong> daemon options]<br />

DESCRIPTION<br />

The showq daemon reports the <strong>Postfix</strong> mail queue status.<br />

It is the program that emulates the sendmail `mailq' command.<br />

The showq daemon can also be run in stand-alone mode by<br />

the super-user. This mode of operation is used to emulate<br />

the `mailq' command while the <strong>Postfix</strong> mail system is down.<br />

SECURITY<br />

The showq daemon can run in a chroot jail at fixed low<br />

privilege, and takes no input from the client. Its service<br />

port is accessible to local untrusted users, so the service<br />

can be susceptible to denial of service attacks.<br />

STANDARDS<br />

None. The showq daemon does not interact with the outside<br />

world.<br />

DIAGNOSTICS<br />

Problems and transactions are logged to syslogd(8).<br />

BUGS<br />

The showq daemon runs at a fixed low privilege; consequently,<br />

it cannot extract information from queue files in<br />

the maildrop directory.<br />

SEE ALSO<br />

cleanup(8) canonicalize and enqueue mail<br />

pickup(8) local mail pickup service<br />

qmgr(8) mail being delivered, delayed mail<br />

syslogd(8) system logging<br />

LICENSE<br />

The Secure Mailer license must be distributed with this<br />

software.<br />

AUTHOR(S)<br />

Wietse Venema<br />

IBM T.J. Watson <strong>Research</strong><br />

P.O. Box 704<br />

Yorktown Heights, NY 10598, USA<br />

1<br />

http://www.porcupine.org/postfix-mirror/showq.8.html<br />

6/26/01

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