dot-qmail(5)</A></STRONG>, <STRONG><A HREF="../cat5/envelopes.0.html">envelopes(5)</A></STRONG>, <STRONG><A HREF="../cat8/qmail-command.0.html">qmail-command(8)</A></STRONG>, qmail- <STRONG><A HREF="../cat8/queue.0.html">queue(8)</A></STRONG>, <STRONG><A HREF="../cat8/qmail-send.0.html">qmail-send(8)</A></STRONG>, <STRONG><A HREF="../cat8/qmail-lspawn.0.html">qmail-lspawn(8)</A></STRONG>dot-qmail(5)</STRONG>. The message's envelope recipient is <EM>local@domain</EM>. <STRONG>qmail-</STRONG> <STRONG>alias</STRONG> records <EM>local@domain</EM> in a new <STRONG>Delivered-To</STRONG> header field. If exactly the same <STRONG>Delivered-To:</STRONG> <EM>local@domain</EM> already appears in the header, <STRONG>qmail-alias</STRONG> bounces the message, to prevent mail forwarding loops. The message's envelope sender is <EM>sender</EM>. <STRONG>qmail-alias</STRONG> records <EM>sender</EM> in a new <STRONG>Return-Path</STRONG> header field. <EM>homedir</EM> is the user's home directory. It must be an abso- lute directory name. <EM>dash</EM> and <EM>ext</EM> identify the <STRONG>.qmail</STRONG><EM>dashext</EM> file used by <STRONG>qmail-alias</STRONG>; see <STRONG>dot-qmail(5)</STRONG>. Normally <EM>dash</EM> is either empty or a lone hyphen. If it is empty, <STRONG>qmail-alias</STRONG> treats a nonexistent <STRONG>.qmail</STRONG><EM>ext</EM> the same way as an empty <STRONG>.qmail</STRONG><EM>ext</EM>. The standard input for <STRONG>qmail-alias</STRONG> must be a seekable file, so that <STRONG>qmail-alias</STRONG> can read it more than once.