-
Notifications
You must be signed in to change notification settings - Fork 179
Q0406
Q0406
Some of my users are using the .forward to pipe to a shell command which appends to the user's INBOX. How can I forbid this?
If you allow your users to run shells in pipes, you cannot control which
commands they run or which files they write to. However, you should
point out to them that writing to an INBOX by arbitrary commands is not
interlocked with the MTA and MUAs, and is liable to mess up the contents
of the file. If a user simply wants to choose a specific file for the
delivery of messages, this can be done by putting a file name in a
.forward file rather than using a pipe, or by using the save command
in an Exim filter file. You can set forbid_pipe on the router, but
that will prevent them from running any pipe commands at all.
Alternatively, you can restrict which commands they may run in their
pipes by setting the allow_commands and/or restrict_to_path options
in the address_pipe transport.
- I need to have any mail for virt.dom.ain that doesn't match one of the
- How do I arrange for all incoming email for *@some.domain to go into
- How do I configure Exim to send messages for unknown local users to a
- How can I arrange for messages submitted by (for example) Majordomo to
- On a host that accepts mail for several domains, do I have to use fully
- Some of my users are using the .forward to pipe to a shell command
- How can I arrange for a default value when using a query-style lookup
- If I don't fully qualify the addresses in a virtual domain's alias file
- I want mail for any local part at certain virtual domains to go to a
- How can I make Exim look in the alias NIS map instead of /etc/aliases?
- Why will Exim deliver a message locally to any username that is longer
- Why am I seeing the error bad mode (100664) for /home/test/.forward?
- When a user's .forward file is syntactially invalid, Exim defers
- I have set
caseful_local_parton the routers that handle my local - Can I use my existing alias files and forward files as well as procmail
- What is quickest way to set up Exim so any message sent to a
- What do I need to do to make Exim handle /usr/ucb/vacation processing
- I want to use a default entry in my alias file to handle unknown local
- I have some obsolete domains which people have been warned not to use
- How can I arrange that mail addressed to
- I can't get a regular expression to work in a
local_partsoption on - How can I arrange for all addresses in a group of domains
- Some of our users have no home directories; the field in the password
- How can I disable Exim's de-duplication features? I want it to do two
- My users' mailboxes are distributed between several servers according to
- One of the things I want to set up is for anything@onedomain to
- How can I have an address looked up in two different alias files, and
- I've converted from Sendmail, and I notice that Exim doesn't make use of
- I would like to deliver mail addressed to a given domain to local
- Whenever Exim tries to route a local address, it gives a permission
- How do I configure Exim to allow arbitrary extensions in local parts, of
- I use NIS for my user data. How can I stop Exim rejecting mail when my
- How can I arrange for a single address to be processed by both
- How can I redirect all local parts that are not in my system aliases to
- My alias file contains fully qualified addresses as keys (as it was used