On Mon, 2011-02-07 at 12:08 +0000, John Horne wrote:
> Hello,
>
> Using Exim 4.74, in the ACL checking the sender address I have the
> following snippet:
>
> accept senders = :
> deny set acl_m_spf_dns = ${lookup dnsdb {>\n; txt=
> $sender_address_domain}}
>
> (The above 'deny' is all one line.) However in my log file I am getting
> error messages about this. For example:
>
> 2011-02-07 11:37:15 H=(mail.aston.ro) [95.64.115.74]:35564
> temporarily rejected MAIL <alert@???>: failed to
> expand ACL string "${lookup dnsdb {>\n; txt=
> $sender_address_domain}}": lookup of ">
>
> From the docs, the use of '>\n;' seems to be correct, so I am a little
> unsure what the problem is. Anyone any ideas?
>
Checking several of the domains that have failed, they all seem to
return a DNS SERVFAIL error. I suspect that the messages concerned
should be deferred, but because the lookup is not expanding correctly,
probably because of the '\n', so Exim instead says it is going to
temporarily reject it. I'm assuming the expansion failure is actually a
bug.
John.
--
John Horne Tel: +44 (0)1752 587287
University of Plymouth, UK Fax: +44 (0)1752 587001
