[H-GEN] Replacement?

[Jason Parker-Burlingham]

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Sarah Walters <sarah at uow.edu.au> writes:

> Masquerade entire domain, including envelope.

I use exim to do this, and it is easy:

/--[exim.conf]--
| *@freezer    ${lookup{$1}lsearch{/etc/email-addresses}\
|                                       {$value}fail} frFs
\---------------

The stuff in the brackets defines how to do the replacement, the flags
at the end of the line define where to make replacements.  I haven't
had any issues with it since I installed it.

/--[/etc/email-addresses]--
henry:  jasonp at uq.net.au
\--------------------------

It's also possible to list the addresses in exim.conf itself.

> Some form of spam filtering - currently configured to use RBL and
> bounce domains that can't resolve.

I know exim can use the RBL, and I suppose it could be configured to
bounce domains that don't resolve (section 46 of spec.txt would
probably be applicable).

> I would also like to be able to bounce mail that is obviously
> spam. For example, our bigpond email address is forwarded to our
> home mail server. Except for bills, most mail going to that address
> is spam. The envelope is addressed to our bigpond account, but the
> To field is a non-existant email address on our system. Whenever we
> see these we know they are spam. If there's any way to blackhole
> them that would be wonderful.

This could also be possible, but I'm not really sure.

I _have_ heard about a project that integrates spamassassin right into
exim, but it requires source hackery.  I'm not using it myself.

[Stop press:  read section 46.2 of spect.txt.]

> Needs to handle aliases and be specified a few domains to relay
> (duh).  Don't give a damn about the mailbox format, as long as there
> is an IMAP server that can read it. Currently using imap-uw, but can
> survive if I have to switch.

Exim will write any mail format you like.  I'm still quite happy with
mbox.

> Security is a major issue. Setuid binaries - especially sitting on an
> open port ala older versions of sendmail - make me uncomfortable.

I'm not aware that exim is any more or less secure than sendmail.

> Performance is not an issue at the moment. There's only two people using
> the damn thing, and it's a 1.3 ghz celeron so short of a DOS it should
> be able to cope with anything I throw at it. However I would like any
> opinions about comparative performance of MTAs.

Well, exim _does_ have a reputation for being slow, but some pretty
major sites use it without trouble, and so do I (I could easily
receive as much mail as two or three other people).

jason
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| ``It's just a big electric typewriter.''                              |
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