Bug#627988: exim4: blacklist issue rcpt tempararely rejected - how to reproduce

[Christoph Schindler]

The problem occurs when there is an entry in local_host_blacklist that
is a domain for which the lookup returns a SERVFAIL.

I rigged a DNS record so you can test this: add fail.30hopsmax.at to
local_host_blacklist. As long as that entry is there, every icoming
email (not only for this one domain) is rejected with a 451 temporary
error.

One problem is that the documentation explicitly states that hostnames
are fine:

exim4_files(5)

    /etc/exim4/local_host_blacklist
           is an optional file containing a list of IP addresses,
           networks and host names [...]

conf.d/acl/30_exim4-config_check_rcpt (and exim4.conf.template)

    # deny bad sites (IP address)
    # CONFDIR/local_host_blacklist holds a list of host names [...]

Should this be considered a documentation bug?


hop

-- 
What should you do to a blue elephant? Cheer it up.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3745 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-exim4-maintainers/attachments/20120320/1702f723/attachment.bin>