vluzrmos
By:
vluzrmos

Wordpress SMTP connect() failed.

December 31, 2014 9.5k views

English: Error on trying to configure SMTP mails on Wordpress. On the debug message below i'm using the WP Mail SMTP plugin, the others only shows SMTP connect() failed..
Português: Erro ao tentar configurar emails SMTP no Wordpress. Na mensagem abaixo estou usando o plugin WP Mail SMTP, os outros só mostram SMTP connect() failed..

Test Message Sent

The result was:
bool(false)
The full debugging output is shown below:
object(PHPMailer)#6308 (69) {
  ["Version"]=>
  string(5) "5.2.7"
  ["Priority"]=>
  int(3)
  ["CharSet"]=>
  string(5) "UTF-8"
  ["ContentType"]=>
  string(10) "text/plain"
  ["Encoding"]=>
  string(4) "8bit"
  ["ErrorInfo"]=>
  string(22) "SMTP connect() failed."
  ["From"]=>
  string(18) "vluzrmos@gmail.com"
  ["FromName"]=>
  string(15) "Vagner do Carmo"
  ["Sender"]=>
  string(18) "vluzrmos@gmail.com"
  ["ReturnPath"]=>
  string(0) ""
  ["Subject"]=>
  string(53) "WP Mail SMTP: Test mail to vagnerluzdocarmo@gmail.com"
  ["Body"]=>
  string(68) "This is a test email generated by the WP Mail SMTP WordPress plugin."
  ["AltBody"]=>
  string(0) ""
  ["Ical"]=>
  string(0) ""
  ["MIMEBody":protected]=>
  string(69) "This is a test email generated by the WP Mail SMTP WordPress plugin.
"
  ["MIMEHeader":protected]=>
  string(450) "Date: Wed, 31 Dec 2014 08:17:52 +0000
Return-Path: 
To: vagnerluzdocarmo@gmail.com
From: Vagner do Carmo 
Subject: WP Mail SMTP: Test mail to vagnerluzdocarmo@gmail.com
Message-ID: <6ea4d4465a43398faddaecfbcc638ba1@blog.vluzrmos.com.br>
X-Priority: 3
X-Mailer: PHPMailer 5.2.7 (https://github.com/PHPMailer/PHPMailer/)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

"
  ["mailHeader":protected]=>
  string(0) ""
  ["WordWrap"]=>
  int(0)
  ["Mailer"]=>
  string(4) "smtp"
  ["Sendmail"]=>
  string(18) "/usr/sbin/sendmail"
  ["UseSendmailOptions"]=>
  bool(true)
  ["PluginDir"]=>
  string(0) ""
  ["ConfirmReadingTo"]=>
  string(0) ""
  ["Hostname"]=>
  string(0) ""
  ["MessageID"]=>
  string(0) ""
  ["MessageDate"]=>
  string(0) ""
  ["Host"]=>
  string(14) "smtp.gmail.com"
  ["Port"]=>
  string(3) "465"
  ["Helo"]=>
  string(0) ""
  ["SMTPSecure"]=>
  string(3) "ssl"
  ["SMTPAuth"]=>
  bool(true)
  ["Username"]=>
  string(18) "vluzrmos@gmail.com"
  ["Password"]=>
  string(8) "[hidden]"
  ["AuthType"]=>
  string(0) ""
  ["Realm"]=>
  string(0) ""
  ["Workstation"]=>
  string(0) ""
  ["Timeout"]=>
  int(10)
  ["SMTPDebug"]=>
  bool(true)
  ["Debugoutput"]=>
  string(4) "echo"
  ["SMTPKeepAlive"]=>
  bool(false)
  ["SingleTo"]=>
  bool(false)
  ["SingleToArray"]=>
  array(0) {
  }
  ["do_verp"]=>
  bool(false)
  ["AllowEmpty"]=>
  bool(false)
  ["LE"]=>
  string(1) "
"
  ["DKIM_selector"]=>
  string(0) ""
  ["DKIM_identity"]=>
  string(0) ""
  ["DKIM_passphrase"]=>
  string(0) ""
  ["DKIM_domain"]=>
  string(0) ""
  ["DKIM_private"]=>
  string(0) ""
  ["action_function"]=>
  string(0) ""
  ["XMailer"]=>
  string(0) ""
  ["smtp":protected]=>
  object(SMTP)#6307 (12) {
    ["Version"]=>
    string(5) "5.2.7"
    ["SMTP_PORT"]=>
    int(25)
    ["CRLF"]=>
    string(2) "
"
    ["do_debug"]=>
    bool(true)
    ["Debugoutput"]=>
    string(4) "echo"
    ["do_verp"]=>
    bool(false)
    ["Timeout"]=>
    int(10)
    ["Timelimit"]=>
    int(30)
    ["smtp_conn":protected]=>
    bool(false)
    ["error":protected]=>
    NULL
    ["helo_rply":protected]=>
    NULL
    ["last_reply":protected]=>
    string(0) ""
  }
  ["to":protected]=>
  array(1) {
    [0]=>
    array(2) {
      [0]=>
      string(26) "vagnerluzdocarmo@gmail.com"
      [1]=>
      string(0) ""
    }
  }
  ["cc":protected]=>
  array(0) {
  }
  ["bcc":protected]=>
  array(0) {
  }
  ["ReplyTo":protected]=>
  array(0) {
  }
  ["all_recipients":protected]=>
  array(1) {
    ["vagnerluzdocarmo@gmail.com"]=>
    bool(true)
  }
  ["attachment":protected]=>
  array(0) {
  }
  ["CustomHeader":protected]=>
  array(0) {
  }
  ["lastMessageID":protected]=>
  string(55) "<6ea4d4465a43398faddaecfbcc638ba1@blog.vluzrmos.com.br>"
  ["message_type":protected]=>
  string(5) "plain"
  ["boundary":protected]=>
  array(3) {
    [1]=>
    string(35) "b1_6ea4d4465a43398faddaecfbcc638ba1"
    [2]=>
    string(35) "b2_6ea4d4465a43398faddaecfbcc638ba1"
    [3]=>
    string(35) "b3_6ea4d4465a43398faddaecfbcc638ba1"
  }
  ["language":protected]=>
  array(18) {
    ["authenticate"]=>
    string(35) "SMTP Error: Could not authenticate."
    ["connect_host"]=>
    string(43) "SMTP Error: Could not connect to SMTP host."
    ["data_not_accepted"]=>
    string(30) "SMTP Error: data not accepted."
    ["empty_message"]=>
    string(18) "Message body empty"
    ["encoding"]=>
    string(18) "Unknown encoding: "
    ["execute"]=>
    string(19) "Could not execute: "
    ["file_access"]=>
    string(23) "Could not access file: "
    ["file_open"]=>
    string(33) "File Error: Could not open file: "
    ["from_failed"]=>
    string(35) "The following From address failed: "
    ["instantiate"]=>
    string(36) "Could not instantiate mail function."
    ["invalid_address"]=>
    string(15) "Invalid address"
    ["mailer_not_supported"]=>
    string(25) " mailer is not supported."
    ["provide_address"]=>
    string(54) "You must provide at least one recipient email address."
    ["recipients_failed"]=>
    string(45) "SMTP Error: The following recipients failed: "
    ["signing"]=>
    string(15) "Signing Error: "
    ["smtp_connect_failed"]=>
    string(22) "SMTP connect() failed."
    ["smtp_error"]=>
    string(19) "SMTP server error: "
    ["variable_set"]=>
    string(30) "Cannot set or reset variable: "
  }
  ["error_count":protected]=>
  int(2)
  ["sign_cert_file":protected]=>
  string(0) ""
  ["sign_key_file":protected]=>
  string(0) ""
  ["sign_key_pass":protected]=>
  string(0) ""
  ["exceptions":protected]=>
  bool(true)
}
The SMTP debugging output is shown below:
SMTP -> ERROR: Failed to connect to server: Connection timed out (110)
2 Answers

Try from the command line:
service sendmail start

Or:
/bin/systemctl start sendmail.service

What happens if you try to send a mail manually from the command line?

For example:
https://workaround.org/ispmail/lenny/test-mail-through-telnet
Or
http://exchange.mvps.org/smtp_frames.htm

This way you can test if SNMP is actually working from your machine.
If it is, then its a local config / service issue.

Infact,
Try:
telnet localhost 25

Does it show something like?
[root@mail sdfsdfsdf.com]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.dsfsfsdfsf.com ESMTP Sendmail 8.14.7/8.14.7; Wed, 31 Dec 2014 09:00:18 GMT
quit
221 2.0.0 mail.sdfsfsdfsdf.com closing connection
Connection closed by foreign host.

If so, Then your local SMTP server is ok..

Have another answer? Share your knowledge.