X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/f05da2e8b55f18554ebbcf97523fd54fb03d071e..d38f823269ffb0e25cbf2c9b6204f61e149169a7:/doc/doc-txt/NewStuff diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff index f8e31469d..3109ea96f 100644 --- a/doc/doc-txt/NewStuff +++ b/doc/doc-txt/NewStuff @@ -1,4 +1,4 @@ -$Cambridge: exim/doc/doc-txt/NewStuff,v 1.18 2004/11/25 13:54:31 ph10 Exp $ +$Cambridge: exim/doc/doc-txt/NewStuff,v 1.21 2004/12/20 15:24:27 ph10 Exp $ New Features in Exim -------------------- @@ -9,7 +9,7 @@ updated when there is a relatively large batch of changes). The doc/ChangeLog file contains a listing of all changes, including bug fixes. -Version 4.44 +Version 4.50 ------------ 1. There is a new build-time option called CONFIGURE_GROUP which works like @@ -151,9 +151,22 @@ Version 4.44 default - see 14 below), in the same way that multiple DNS records for a single item are handled. - The lookup fails only if all the DNS lookups fail. As long as at least one - of them yields some data, the lookup succeeds. However, if there is a - temporary DNS error for any of them, the lookup defers. + The dnsdb lookup fails only if all the DNS lookups fail. If there is a + temporary DNS error for any of them, the behaviour is controlled by + an optional keyword followed by a comma that may appear before the record + type. The possible keywords are "defer_strict", "defer_never", and + "defer_lax". With "strict" behaviour, any temporary DNS error causes the + whole lookup to defer. With "never" behaviour, a temporary DNS error is + ignored, and the behaviour is as if the DNS lookup failed to find anything. + With "lax" behaviour, all the queries are attempted, but a temporary DNS + error causes the whole lookup to defer only if none of the other lookups + succeed. The default is "lax", so the following lookups are equivalent: + + ${lookup dnsdb{defer_lax,a=one.host.com:two.host.com}} + ${lookup dnsdb{a=one.host.com:two.host.com}} + + Thus, in the default case, as long as at least one of the DNS lookups + yields some data, the dnsdb lookup succeeds. 15. It is now possible to specify the character to be used as a separator when a dnsdb lookup returns data from more than one DNS record. The default is a @@ -198,7 +211,11 @@ Version 4.44 2.1.168.192.black.list.tld and a.domain.black.list.tld Once a DNS record has been found (that matches a specific IP return - address, if specified), no further lookups are done. + address, if specified), no further lookups are done. If there is a + temporary DNS error, the rest of the sublist of domains or IP addresses is + tried. The dnslists item itself defers only if none of the other DNS + lookups in this sublist succeeds. In other words, a successful lookup for + any of the items in the sublist overrides a defer for a previous item. 17. The log selector queue_time_overall causes Exim to output the time spent on the queue as an addition to the "Completed" message. Like queue_time (which @@ -214,6 +231,9 @@ Version 4.44 This is helpful when the system filter adds header lines or sets filter variables that are used by the user filter. +19. The Exiscan patch is now merged into the main source. See src/EDITME for + parameters for the build. + Version 4.43 ------------