Hey there, Matt here again.
So, I think a found a possible solution without any source-file mods but
only clever mailet-config in mailetcontainer.xml.
As I dug through the source I found the standard mailets for
RecipientIsLocal. Then I found RecipientIsRegex (I might need some help
here). Also there is something called RewriteTable.
I set up a fresh opensuse leap 15 - cron sends mails as
<user>@<hostname>.<domain> - so I set up a small test-script and looked
at log while running james in console mode: when the domainlist doesn't
contain <hostname>.<domain> but only <domain> james thinks that
<hostname>.<domain> is external and tries RemoteDelivery. So I added
<hostname>.<domain> to domainlist. As I just had the domain, but not the
user, the mail is denied as user doesn't exists for the domain. When I
add the user as <localuser>@<hostname>.<domain> it gets local delivered
without additional copy in sent folder. So as I don't want to set up a
user for each localuser, but also want to avoid fastfail I come up with:
What if I could early check for <whatever>@<hostname>.<domain> and could
just re-write it to an existing account in form of <user>@<domain>? When
recipient is re-written before RecipientIsLocal is checked, then this
should trigger and just deliver any local mail from what ever service to
the mailbox I want to.
So I search through the source tree - but couldn't find anything to
alter the recipient by mailet. All I found was the
recipientrewritetable.xml file and the AddRegexMapping command available
in james-cli.sh. The xml-config doesn't seem to help, but the
AddRegexMapping command looks good, but I don't understand the command
parameters:
AddRegexMapping <user> <domain> <regex>
Can someone get me some hint how to use this command? Or where/how I can
setup the recipient-rewrite before RecipientIsLocal is checked?
Thanks in advance,
Matt
Am 27.01.2019 um 15:20 schrieb cryptearth:
So, as far as I dug through the code, it seems to come down to
MailetContext.isLocalEmail(MailAddress) wich is checked by
RecipientIsLocal (wich I guess also involve somehow a check of
isLocalServer(Domain). In transport-processor there is the line
<mailet match="RecipientIsLocal" class="LocalDelivery" />
I looked into LocalDelivery.java, but I guess when this matches it's
to late to perform the test I want to about where the mail comes from
and where it should send. JamesMailetContext looks good, as it
contains isLocalServer(Domain), wich should also used to check
SenderIsLocal (wich shouldn't matter, as this test is performed by
source 127.0.0.1). As far as I yet could identify, it all comes down
to somehow tell the config, that whatever domain sendmail uses (it's
either hostname or hostname.domain) is considered as localServer. The
wild-card alias shouldn't be any harder to find or figure out as I
simply have to rewrite anything that comes from local and is for
local, but isn't in localUserList, is re-written to whatever address I
want.
I'll report back when I found the lines to alter.
Matt
Am 26.01.2019 um 22:57 schrieb cryptearth:
Currently I'm just using out-of-the-box after clean build. I'll have
a look at the mentioned class and the mailetcontainer. Maybe I'll
find my way around. Good James is written in Java - the one language
I really know.
Thanks for the point in a possible direction. I'll report back when I
got something usefull.
Matt
---- Garry Hurley schrieb ----
Matt, are you using a custom mailet, or working out of the box? Take
a look at the source for LocalDelivery.java
<http://LocalDelivery.java>, and the configuration for local mail in
your mailetcontainer.xml <http://mailetcontainer.xml> file. You may
have to override some functionality to get the processing you want.
Sent from my iPhone
> On Jan 26, 2019, at 9:36 AM, cryptearth <cryptea...@cryptearth.de
<mailto:cryptea...@cryptearth.de>> wrote:
>
> Hey there, Matt here.
>
> So I got sendmail working with james now (tried postfix, but it
always complains forwarding to localhost isn't supported as there is
no option to ignore false loopback detection), and when used from
apache with additional -f parameter all works good. But as there're
other services might drop mail into local queue (crontab specificly)
I noticed, that I'm still missing something. My goal is somesort of
wildcard alias so that no matter from wich user sendmail gets a
message, except the one I use for apache, it should redirect them
internally to one of the user-accounts inside james itself. I guess
there would be a simple solution if would like all mails to get
forwareded, but I don't think there is a blacklist syntax so that
mails from specific services with non-local recipients got send out.
>
> Currently I'm using 3.2.0 <tel:3.2.0> final release commit. I also
looked into the mailetcontainer.xml <http://mailetcontainer.xml> file
and I guess it's possible in there to specify this rule:
>
> redirect anything local, except address set in apache config, to
user X, otherwise when from apache with non-local target -> transport
>
> Could anyone maybe give me a hint?
> Other solution: redirect anything local from sendmail to processing
and with another task process the mails like some short lines of
additional Java.
>
> Matt
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