* Adam Nielsen [2017-03-20 20:04]:
Hi all,
New issue, now I have SMTP AUTH figured out. When one of my network
devices sends e-mail, it uses an unqualified name (just the hostname
with no '@' or domain.) Exim rejects this as it does not allow
unqualified addresses from remote hosts.
[...]
It looks like there are two options "sender_unqualified_hosts" and
"recipient_unqualified_hosts" that could permit this, however from what
I can make out you can only specify hostnames for both options. Since
my troublesome device is behind a dynamic IP, there's no hostname that
can be specified.
It is of course authenticating with Exim so it is permitted to send
mail, so I am trying to figure out how to allow unqualified senders
over authenticated connections. Either allowing these addresses or
having Exim qualify them would be fine, but I can't quite see how to
manage this.
There seems to be a "submission" control option to make Exim behave
like the connection is coming from an MUA (where unqualified senders
are apparently permitted), so I tried adding this to my config:
acl_smtp_mail = acl_check_mail
acl_check_mail:
accept
authenticated = *
control = submission/domain=mydomain
I figured the MAIL ACL is where it belongs since the Exim logs above
indicate failure immediately after the SMTP MAIL FROM command.
Unfortunately, adding this ACL does not do anything and the message is
still rejected for the same reasons.
What am I missing?
You correctly spotted sender_unqualified_hosts and it is the option to
use in this case. Setting "control = submission" will not make Exim
accept an address without a domain part, you'll have to set
sender_unqualified_hosts. If your client hosts are dynamic, you could
set it to *. If your clients connect to some other port than 25, you
could do this (untested!):
SEnder_unqualified_hosts = ${if =={$received_port}{25}{}{*}}
This will make sender_unqualified_hosts empty for port 25, but * for
everyone else.
--
-- Kirill Miazine <[email protected]>
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