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author | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-09 11:44:11 +0200 |
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committer | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-09 11:44:11 +0200 |
commit | f1b71c9fe7dbb4886588a036399cf5ebe16b7c47 (patch) | |
tree | e07786aa479c9fb6ee3e537078470aaab5454f80 /man/setforward.1 | |
parent | a293489ee83c8b05d845a162dc2a4de026f3775d (diff) |
removed top level directory
Diffstat (limited to 'man/setforward.1')
-rw-r--r-- | man/setforward.1 | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/man/setforward.1 b/man/setforward.1 new file mode 100644 index 0000000..1c2925c --- /dev/null +++ b/man/setforward.1 @@ -0,0 +1,204 @@ +.TH s/qmail: setforward 1 +.SH NAME +setforward \- create a forwarding database +.SH SYNOPSIS +.B setforward +.I cdb +.I tmp +.SH DESCRIPTION +.B setforward +reads a table of forwarding instructions from its standard input. +It converts the table into a forwarding database. +The forwarding database can be used by +.BR fastforward . + +.B setforward +writes the forwarding database to +.IR tmp ; +it then moves +.I tmp +to +.IR cdb . +.I tmp +and +.I cdb +must be on the same filesystem. + +If there is a problem creating +.IR tmp , +.B setforward +complains and leaves +.I cdb +alone. + +The forwarding database format is portable across machines. +.SH "INSTRUCTION FORMAT" +A forwarding instruction contains a +.I target\fR, +a colon, a series of commands, and a semicolon. +Each command is a +.I recipient address\fR, +.I owner address\fR, +.I external mailing list\fR, +or +.I program\fR. +Commands are separated by commas. + +For example, + +.EX + root@yp.to: god@heaven.af.mil, staff@af.mil; +.EE + +says that mail for +.B root@yp.to +should be forwarded to the recipient addresses +.B god@heaven.af.mil +and +.BR staff@af.mil . + +When +.B setforward +sees # it ignores all text from # to the end of the line: + +.EX + # this is a comment +.EE + +.B setforward +ignores all other line endings, +so you can split a forwarding instruction across lines. +It also ignores spaces and tabs. +Exception: +you can put a space (or tab or comma or whatever) +into a target or command by putting a backslash in front of it. +(However, NUL bytes are not permitted anywhere.) +.SH "TARGETS" +When +.B fastforward +sees the incoming address +.IR user@host.dom , +it tries three targets: +.IR user@host.dom , +.IR @host.dom , +and +.IR user@ . +It obeys the commands for the first target that it finds. +Target names are interpreted without regard to case. + +All the commands for a single target must be listed in a single instruction. +Exception: an owner address can be listed in a separate instruction. +.SH "RECIPIENT ADDRESSES" +If a command begins with an ampersand, +.B setforward +takes the remaining bytes in the command as a recipient address: + +.EX + boss@yp.to: &god@heaven.af.mil; +.EE + +.B fastforward +sends each incoming mail message +to the recipient address. +The recipient address must include a fully qualified domain name. +It cannot be longer than 800 bytes. + +If a recipient address is itself a target in the forwarding table, +.B fastforward +will recursively handle the instructions for that target. +Note that +.I @host.dom +and +.I user@ +wildcards do not apply here; +they apply only to the incoming address. + +If a command begins with a letter or number, +.B setforward +takes the entire command as a recipient address: + +.EX + boss@yp.to: god@heaven.af.mil; +.EE +.SH "OWNER ADDRESSES" +If a command begins with a question mark, +.B setforward +takes the remaining bytes in the command as an owner address: + +.EX + sos@heaven.af.mil: ?owner-sos@heaven.af.mil; +.EE + +.B fastforward +uses that address as the envelope sender for forwarded mail, +so bounces will go back to that address. +(Normally, if a message is forwarded to a bad address, +it will bounce back to the original envelope sender.) +.SH "EXTERNAL MAILING LISTS" +If a command begins with a dot or slash, +.B setforward +takes the entire command as the name of a binary mailing list file created by +.BR setmaillist : + +.EX + sos@heaven.af.mil: /etc/lists/sos.bin; +.EE + +.B fastforward +will read and obey the commands in that file. +The file must be world-readable +and accessible to +.BR fastforward . +.SH "PROGRAMS" +If a command begins with a vertical bar or exclamation point, +.B setforward +takes the rest of the command as the name of a program to run: + +.EX + dew@: |dew-monitor; +.EE + +For a vertical bar, +.B fastforward +feeds the message +to that program. +An exclamation point works the same way except that +.B fastforward +inserts +.BR $UFLINE , +.BR $RPLINE , +and +.B $DTLINE +in front of the message. +.SH "DUPLICATES" +When +.B fastforward +is building the recipient list for a message, +it keeps track of the recipient addresses and external mailing lists +it has used. +If the same command shows up again, it skips it. +For example: + +.EX + everybody@yp.to: programmers@yp.to, testers@yp.to; + programmers@yp.to: joe@yp.to, bob@yp.to; + testers@yp.to: joe@yp.to, fred@yp.to; +.EE + +A message to +.B everybody@yp.to +will be sent to +.B joe@yp.to +only once. +(This also means that addresses in an internal forwarding loop +are discarded.) + +Exception: +If a target has an owner address, +commands for that target are considered different +from commands for ``outside'' targets. +.SH "SEE ALSO" +newaliases(1), +preline(1), +printforward(1), +setmaillist(1) |