new file mode 100644
--- /dev/null
+++ b/runtime/syntax/mailaliases.vim
@@ -0,0 +1,71 @@
+" Vim syntax file
+" Language:         aliases(5) local alias database file
+" Maintainer:       Nikolai Weibull <nikolai@bitwi.se>
+" Latest Revision:  2006-01-14
+
+if exists("b:current_syntax")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+syn keyword mailaliasesTodo         contained TODO FIXME XXX NOTE
+
+syn region  mailaliasesComment      display oneline start='^\s*#' end='$'
+                                    \ contains=mailaliasesTodo,@Spell
+
+syn match   mailaliasesBegin        display '^'
+                                    \ nextgroup=mailaliasesName,
+                                    \ mailaliasesComment
+
+syn match   mailaliasesName         contained '[0-9A-Za-z_-]\+'
+                                    \ nextgroup=mailaliasesColon
+
+syn region  mailaliasesName         contained oneline start=+"+
+                                    \ skip=+\\\\\|\\"+ end=+"+
+                                    \ nextgroup=mailaliasesColon
+
+syn match   mailaliasesColon        contained ':'
+                                    \ nextgroup=@mailaliasesValue
+                                    \ skipwhite skipnl
+
+syn cluster mailaliasesValue        contains=mailaliasesValueAddress,
+                                    \ mailaliasesValueFile,
+                                    \ mailaliasesValueCommand,
+                                    \ mailaliasesValueInclude
+
+syn match   mailaliasesValueAddress contained '[^ \t/|,]\+'
+                                    \ nextgroup=mailaliasesValueSep
+                                    \ skipwhite skipnl
+
+syn match   mailaliasesValueFile    contained '/[^,]*'
+                                    \ nextgroup=mailaliasesValueSep
+                                    \ skipwhite skipnl
+
+syn match   mailaliasesValueCommand contained '|[^,]*'
+                                    \ nextgroup=mailaliasesValueSep
+                                    \ skipwhite skipnl
+
+syn match   mailaliasesValueInclude contained ':include:[^,]*'
+                                    \ nextgroup=mailaliasesValueSep
+                                    \ skipwhite skipnl
+
+syn match   mailaliasesValueSep     contained ','
+                                    \ nextgroup=@mailaliasesValue
+                                    \ skipwhite skipnl
+
+hi def link mailaliasesTodo         Todo
+hi def link mailaliasesComment      Comment
+hi def link mailaliasesName         Identifier
+hi def link mailaliasesColon        Delimiter
+hi def link mailaliasesValueAddress String
+hi def link mailaliasesValueFile    String
+hi def link mailaliasesValueCommand String
+hi def link mailaliasesValueInclude PreProc
+hi def link mailaliasesValueSep     Delimiter
+
+let b:current_syntax = "mailaliases"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save