OJS 3.1.0.1 No way to send mail

I just installed a new OJS 3.1.0.1 and no mails ares sent.

I contacted the web provider: smtp server and port are correct and can be acceded by telnet.
I send also the error_log file when sending a mail to a user from administration. (user & roles / Users / e-mail) I don’t see any error related whith SMTP.

Any idea of what i can do???

The mail configuration is the following.

;;;;;;;;;;;;;;;;;;
; Email Settings ;
;;;;;;;;;;;;;;;;;;

[email]

; Use SMTP for sending mail instead of mail()
smtp = On

; SMTP server settings
; smtp_server = mail.example.com
smtp_server = mail.cude.es
smtp_port = 25

; Enable SMTP authentication
; Supported mechanisms: ssl, tls
; smtp_auth = ssl
; smtp_username = username
; smtp_password = password

; Allow envelope sender to be specified
; (may not be possible with some server configurations)
; allow_envelope_sender = Off

; Default envelope sender to use if none is specified elsewhere
; default_envelope_sender = my_address@my_host.com

; Force the default envelope sender (if present)
; This is useful if setting up a site-wide noreply address
; The reply-to field will be set with the reply-to or from address.
; force_default_envelope_sender = Off

; Amount of time required between attempts to send non-editorial emails
; in seconds. This can be used to help prevent email relaying via OJS.
time_between_emails = 3600

; Maximum number of recipients that can be included in a single email
; (either as To:, Cc:, or Bcc: addresses) for a non-priveleged user
max_recipients = 10

; If enabled, email addresses must be validated before login is possible.
require_validation = Off

; Maximum number of days before an unvalidated account expires and is deleted
validation_timeout = 14

Error log
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserGridHandler::renderFilter() should be compatible with GridHandler::renderFilter($request, $filterData = Array) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/UserGridHandler.inc.php on line 0
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserForm::execute() should be compatible with Form::execute() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserForm.inc.php on line 18
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::execute() should be compatible with UserForm::execute($request) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::display() should be compatible with Form::display($request = NULL, $template = NULL) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::initData() should be compatible with Form::initData() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserEmailForm::fetch() should be compatible with Form::fetch($request, $template = NULL, $display = false) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserEmailForm.inc.php on line 0
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Strict Standards: Declaration of UserEmailForm::execute() should be compatible with Form::execute() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserEmailForm.inc.php on line 0
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::getUserVar() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/form/Form.inc.php on line 369
[22-Feb-2018 10:40:57 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 592
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserGridHandler::renderFilter() should be compatible with GridHandler::renderFilter($request, $filterData = Array) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/UserGridHandler.inc.php on line 0
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserForm::execute() should be compatible with Form::execute() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserForm.inc.php on line 18
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::execute() should be compatible with UserForm::execute($request) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::display() should be compatible with Form::display($request = NULL, $template = NULL) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserDetailsForm::initData() should be compatible with Form::initData() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserDetailsForm.inc.php on line 18
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserEmailForm::fetch() should be compatible with Form::fetch($request, $template = NULL, $display = false) in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserEmailForm.inc.php on line 0
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Strict Standards: Declaration of UserEmailForm::execute() should be compatible with Form::execute() in /home/bofpyplv/public_html/ojstest/lib/pkp/controllers/grid/settings/user/form/UserEmailForm.inc.php on line 0
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::getUserVar() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/form/Form.inc.php on line 388
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 592
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::getUserVar() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/form/Form.inc.php on line 388
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 592
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::isPost() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/form/validation/FormValidatorPost.inc.php on line 38
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 396
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::getUser() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/mail/MailTemplate.inc.php on line 232
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 564
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::getRemoteAddr() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/mail/Mail.inc.php on line 508
[22-Feb-2018 10:41:15 Europe/Madrid] PHP Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/bofpyplv/public_html/ojstest/lib/pkp/classes/core/PKPRequest.inc.php on line 425

Sorry problem is solved.
Just a bad diagnostic mail was sent correctly but was received in spam box.