[PATCH] gnu: New default Dovecot service postmaster_address

[PATCH] gnu: New default Dovecot service postmaster_address

[Andy Wingo]

* gnu/services/mail.scm (dovecot-configuration): Change default for
  postmaster-address, as dovecot is now requiring a non-empty value and
  will fail to start up otherwise.
* doc/guix.texi (Mail Services): Update.
---
 doc/guix.texi         | 4 ++--
 gnu/services/mail.scm | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index 808fbdc..c159e12 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -9964,8 +9964,8 @@ Defaults to @samp{""}.
 
 @deftypevr {@code{dovecot-configuration} parameter} string postmaster-address
 Address to use when sending rejection mails.
-Default is postmaster@@<your domain>.  %d expands to recipient domain.
-Defaults to @samp{""}.
+%d expands to recipient domain.
+Defaults to @samp{"postmaster@@%d"}.
 @end deftypevr
 
 @deftypevr {@code{dovecot-configuration} parameter} string hostname
diff --git a/gnu/services/mail.scm b/gnu/services/mail.scm
index d94532c..cb0f119 100644
--- a/gnu/services/mail.scm
+++ b/gnu/services/mail.scm
@@ -1352,7 +1352,7 @@ regeneration entirely.")
    "SSL crypto device to use, for valid values run \"openssl engine\".")
 
   (postmaster-address
-   (string "")
+   (string "postmaster@%d")
    "Address to use when sending rejection mails.
 Default is postmaster@@<your domain>.  %d expands to recipient domain.")
 
-- 
2.9.3