Change sample error value to a sane number

config.toml.sample

@@ -29,7 +29,7 @@ concurrency = 100
 # The number of errors (eg: SMTP timeouts while e-mailing) a running
 # campaign should tolerate before it is paused for manual
 # investigation or intervention. Set to 0 to never pause.
-max_send_errors = 10
+max_send_errors = 1000
 
 
 # Database.