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http://bugs.exim.org/show_bug.cgi?id=863
Summary: Dnsdb should support the SPF DNS record
Product: Exim
Version: 4.69
Platform: Other
OS/Version: Linux
Status: NEW
Severity: wishlist
Priority: medium
Component: Lookups
AssignedTo: nigel@???
ReportedBy: john.horne@???
CC: exim-dev@???
The DNS record type 'SPF' has been available for the past few years. The exim
'dnsdb' lookup should support 'SPF' in the same way that it currently supports
'TXT' (and PTR, A, MX etc).
The ISC BIND DNS resolver has supported the SPF record type since version 9.4,
and although O/S's such as CentOS 5.3 still provide BIND 9.3, it will no doubt
at some point upgrade to 9.4 or above. (BIND itself is at 9.6.1 as the latest
version.)
Similarly, RFC 4408 itself states that (section 3.1.1):
A compliant domain name MUST have a record of at least one type.
'type' being either TXT or SPF record types. Hence, it is perfectly possible,
and valid, for a site to use the DNS SPF record type to advertise it's SPF
records.
Since SPF records relate to email, exims dnsdb lookup should support this type.
NOTE: As far as I can tell, the spf record type is defined to be exactly the
same as the txt type. So I *assume* it should be a question of just duplicating
the current exim txt record handling for spf.
John.
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