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author | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-03 15:48:04 +0200 |
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committer | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-03 15:48:04 +0200 |
commit | 89b7b67a13ebb7965cc7f13ad0595e2194a2d34c (patch) | |
tree | 25efd77a90ae87236e6730d8ea3846bbe0fd126f /man/newaliases.1 |
add sqmail-4.2.29asqmail-4.2
Diffstat (limited to 'man/newaliases.1')
-rw-r--r-- | man/newaliases.1 | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/man/newaliases.1 b/man/newaliases.1 new file mode 100644 index 0000000..a51ff64 --- /dev/null +++ b/man/newaliases.1 @@ -0,0 +1,366 @@ +.TH s/qmail: newaliases 1 +.SH NAME +newaliases \- create a forwarding database from /etc/aliases +.SH SYNOPSIS +.B newaliases +.SH DESCRIPTION +.B newaliases +reads a table of +sendmail-style +forwarding instructions from +.B /etc/aliases +and converts them into a forwarding database in +.BR /etc/aliases.cdb . +The forwarding database can be used by +.BR fastforward . + +For safety, +.B newaliases +writes the forwarding database to +.B /etc/aliases.tmp +and then moves +.B /etc/aliases.tmp +to +.BR /etc/aliases.cdb . +If there is a problem creating +.BR /etc/aliases.tmp , +.B newaliases +complains and leaves +.B /etc/aliases.cdb +alone. +Deliveries can continue using +.B /etc/aliases.cdb +in the meantime. + +.B newaliases +always creates +.B /etc/aliases.cdb +world-readable. + +.B newaliases +makes no attempt to protect against +simultaneous updates of +.BR /etc/aliases.cdb . +.SH "INSTRUCTION FORMAT" +.B newaliases +imitates +sendmail's +handling of +.BR /etc/aliases . +For example, + +.EX + root: alice, bill +.EE + +says that mail for +.B root +should be forwarded to +.B alice +and +.BR bill . + +.B COMPATIBILITY WARNING: +.B newaliases +does not support file deliveries. +You can use the file delivery mechanism described in +.B dot-qmail(5) +instead. +.SH "SIMPLE ALIASES" +The simplest type of forwarding instruction +is a line of the form + +.EX + alias: recip +.EE + +Any message sent to +.I alias +will be forwarded to the recipient address +.IR recip . +Addresses are compared to +.I alias +without regard to case. + +Forwarding instructions are cumulative. +If +.I recip +is itself an alias, +messages to +.I alias +will be forwarded the same way as +messages to +.IR recip . +For example, with the following instructions, +messages to +.B postmaster@heaven.af.mil +or +.B root@heaven.af.mil +will be delivered to Bob: + +.EX + postmaster@heaven.af.mil: bob@heaven.af.mil +.EE +.br +.EX + root@heaven.af.mil: postmaster@heaven.af.mil +.EE + +.B COMPATIBILITY WARNING: +With +sendmail, +entries in +.B /etc/aliases +can override usernames. +With +.BR s/qmail , +if you install +.B fastforward +in +.BR ~alias/.qmail-default , +it will not see addresses that are controlled by other users. +See +.BR qmail-getpw (8). +To change this, see +.BR qmail-users (5). + +.B COMPATIBILITY WARNING: +Various versions of +sendmail +do various strange things with circular alias definitions. +See +.BR setforward (1) +for details on +.BR fastforward 's +behavior. + +.B COMPATIBILITY WARNING: +If there are several forwarding instructions for a single +.IR alias , +sendmail +will complain; +.B fastforward +will silently use the first instruction. +.SH "WILDCARDS" +.I alias +can have the form +.I user@host.dom +for one user at one host, +.I @host.dom +for all users at one host, or +.I user +for one user at all hosts. + +.B COMPATIBILITY WARNING: +sendmail +supports only +.IR user ; +it does not support per-host aliases. +It accepts +.I user@host.dom +if +.I host.dom +is a local host, +but it then treats it the same way as +.IR user , +applying to all local hosts and virtual domains. +.SH "ADDRESS FORMATS" +Addresses in +.B /etc/aliases +are parsed the same way as addresses in RFC 822 message headers. +Parenthesized comments and bracketed addresses are permitted: + +.EX + root: bob (Bob, the postmaster) + joe: Joe Shmoe <shmoe@heaven.af.mil> +.EE + +Addresses with special characters must be quoted: + +.EX + fred: "spaced out mailbox"@heaven.af.mil +.EE + +Address groups are not permitted, +since colons have a different use in +.BR /etc/aliases . + +Any recipient address without a fully qualified domain name is +fed through the +.BR defaulthost , +.BR defaultdomain , +and +.B plusdomain +mechanisms described in +.BR qmail-header (5). + +.B COMPATIBILITY WARNING: +sendmail's +handling of quotes and backslashes violates RFC 821 and RFC 822, +and is not supported by +.BR newaliases . +The +.B qmail-local +delivery mechanism +lets each user manage several addresses, +so there is no need for a special syntax to get around forwarding. +.SH "MULTIPLE RECIPIENTS" +An instruction may list more than one recipient address: + +.EX + alias: recip1, recip2, recip3 +.EE + +Any message sent to +.I alias +will be forwarded to all of the addresses. + +A forwarding instruction may be split across several lines. +Each line past the first must either (1) begin with space or tab +or (2) be empty: + +.EX + hostmaster: +.EE +.br +.EX + fred, +.EE +.br +.EX + joe +.EE + +.B COMPATIBILITY WARNING: +sendmail +requires the colon to be on the first line +of a multi-line forwarding instruction. +.B newaliases +doesn't care whether the colon is present at all. + +.B COMPATIBILITY WARNING: +sendmail +does not permit blank lines in the middle of continuations. +This has the undesirable effect that a blank line behaves differently +from a line containing a single space. +.SH "COMMENTS" +Any line in +.B /etc/aliases +that begins with # is ignored: + +.EX + # this is a comment +.EE + +A comment may be split across several lines. +Each line past the first must either (1) begin with space or tab +or (2) be empty. + +.B COMPATIBILITY WARNING: +sendmail +does not permit continuations of comment lines. +.SH "PROGRAMS" +If a recipient address does not contain a domain name, +and begins with a vertical bar, +.B newaliases +takes the rest of the address as a program to run: + +.EX + weather: "|weather-server" +.EE + +.B fastforward +will run +.B weather-server +when a message arrives for +.BR weather . + +.B COMPATIBILITY WARNING: +Internet addresses can legitimately start with +a slash or vertical bar. +.B newaliases +treats anything with an unquoted @ as an address. +sendmail appears to have various problems +coping with these addresses, +and with commands that contain @ signs. + +.B COMPATIBILITY WARNING: +.B newaliases +does not allow a vertical bar before double quotes. +.SH "INCLUDE FILES" +A recipient address of the form +.B :include:\fIfile +means ``every address listed in +.IR file .'' +(Actually +.B fastforward +reads +.IR file\fB.bin ; +see +.BR newinclude (1) +for further details.) + +Note that +.I file +is read by +.BR fastforward , +not +.BR newaliases , +so the system administrator does not have to run +.B newaliases +every time +.I file +changes. +.I file +must be world-readable +and accessible to +.BR fastforward . + +.B COMPATIBILITY WARNING: +If an +.B :include: +file is unreadable or nonexistent, +sendmail +skips it; +.B fastforward +defers delivery of the message. + +.B COMPATIBILITY WARNING: +sendmail +does not permit spaces inside the literal text +.BR :include: . +.B newaliases +does. + +.B COMPATIBILITY WARNING: +Versions of +sendmail +before V8 did not strip quotes from +.B :include: +filenames. +.SH "ALIAS OWNERS" +If there is an alias for +.BR owner-\fIlist , +any message forwarded through +.I list +will have its envelope sender set to +.BR owner-\fIlist , +so that bounces go back to +.BR owner-\fIlist . + +.B COMPATIBILITY WARNING: +When an alias includes the same recipient both inside and outside +a mailing list, +.B fastforward +sends the message twice, +once with each envelope sender. +sendmail +sends the message only once; +its choice of envelope sender for that recipient +depends on the phase of the moon. +.SH "SEE ALSO" +fastforward(1), +setforward(1), +newinclude(1), +printforward(1), +dot-qmail(5) |