addresses: ${addresses:Exim Person <local-part@dom.ain> (that's me), \
xyz@abc, nullgroupname:;, group: p@q, r@s; }
addresses: ${addresses:local-part@dom.ain <local-part@dom.ain>}
+addresses: ${addresses:>}
escape: ${escape:B7·F2ò}
excape8bit: ${escape8bit:undisturbed text\ttab\nnewline\ttab\\backslash \176tilde\177DEL\200\x81.}
isip: ${if isip {1.2.3.4}{y}{n}} 1.2.3.4
isip4: ${if isip4{1.2.3.4}{y}{n}} 1.2.3.4
isip6: ${if isip6{1.2.3.4}{y}{n}} 1.2.3.4
+isip: ${if isip {::1.2.3.256}{y}{n}} ::1.2.3.256
+isip4: ${if isip4{1.2.3.256}{y}{n}} 1.2.3.256
isip: ${if isip {1:2:3:4}{y}{n}} 1:2:3:4
isip4: ${if isip4{1:2:3:4}{y}{n}} 1:2:3:4
isip6: ${if isip6{1:2:3:4}{y}{n}} 1:2:3:4
isip: ${if isip {fe80::a00:20ff:fe86:a061}{y}{n}} fe80::a00:20ff:fe86:a061
isip4: ${if isip4{fe80::a00:20ff:fe86:a061}{y}{n}} fe80::a00:20ff:fe86:a061
isip6: ${if isip6{fe80::a00:20ff:fe86:a061}{y}{n}} fe80::a00:20ff:fe86:a061
+isip: ${if isip {fe80::1.2.3.4}{y}{n}} fe80::1.2.3.4
isip: ${if isip {rhubarb}{y}{n}} rhubarb
isip4: ${if isip4{rhubarb}{y}{n}} rhubarb
isip6: ${if isip6{rhubarb}{y}{n}} rhubarb