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-rw-r--r--config/main.inc.php.dist5
1 files changed, 5 insertions, 0 deletions
diff --git a/config/main.inc.php.dist b/config/main.inc.php.dist
index 34a976306..991d757a7 100644
--- a/config/main.inc.php.dist
+++ b/config/main.inc.php.dist
@@ -180,6 +180,11 @@ $rcmail_config['des_key'] = 'rcmail-!24ByteDESkey*Str';
// Automatically add this domain to user names for login
// Only for IMAP servers that require full e-mail addresses for login
// Specify an array with 'host' => 'domain' values to support multiple hosts
+// Supported replacement variables:
+// %h - user's IMAP hostname
+// %n - http hostname ($_SERVER['SERVER_NAME'])
+// %d - domain (http hostname without the first part)
+// For example %n = mail.domain.tld, %d = domain.tld
$rcmail_config['username_domain'] = '';
// This domain will be used to form e-mail addresses of new users