Please help to solve problem as below:
A.After creat a users, the user can not receive an email with a generated password which was sent from system.
B.After submit a survey,administrator also can't receive an Email,but In system,the Admin Notification is set as "Basic email notification".
Thanks for your support!

We need to know your mail sender system.

By default, LimeSurvey use the sendmail system of the web serveur. You can use your own smtp, or some other option.

docs.limesurvey.org/Global+settings&stru...urvey#Email_settings

To Shnoulle:Thanks for your reply.

Now, in config.php file:
$emailmethod = "smtp";
$emailsmtphost = "smtpl.example.com:25"; //My company's smtp server name

After sumit a survey, Error info as below:
Warning: fsockopen() [function.fsockopen]: unable to connect to smtpl.example.com:25 (Connection timed out) in /usr/local/apache2/htdocs/limesurvey/classes/phpmailer/class.smtp.php on line 109

Is my configure incorrect of config.php,how to set it?
Thanks:)

ailine wrote: I think there are some error in the the smtp name (smtpl) but maybe there are too, some restriction for your mail server.
Sometimes, smtp can be accessed only with certain IP
In the last version 1.90+, smtp can be set in Global settings

Shnoulle wrote: Check this, the example.com SMTP email setting shown at the error message indicates that you changed the setting at the wrong place. Setting at global settings (-> email in your case) overwrite all settings in config.php