postfix_logrotate_rotate is looking for an int
postfix_logrotate_rotate is looking for an int, not a string.
diff --git a/manifests/server.pp b/manifests/server.pp
index c131135..4387d83 100644
--- a/manifests/server.pp
+++ b/manifests/server.pp
@@ -166,7 +166,7 @@
$max_use_postfix_amavis = '25',
## ASF Custom Logrotate Variables
$postfix_logrotate_path = '/var/log/mail.log',
- $postfix_logrotate_rotate = '7',
+ $postfix_logrotate_rotate = 7,
$postfix_logrotate_rotate_every = 'day',
$postfix_logrotate_compress = true,
$postfix_logrotate_delaycompress = true,