No SMTP Mails Sent

I have 2 sites… One that is working with your plugin (v0.10.1) and one that is not (v0.11.2). That is the only difference between the 2 sites. On the one that is not working we have dropped back to using the PHP mail() function, but we’re losing emails to spam folders at Google…

I see a few reports here that things stopped working for others. One mentioned that they downgraded and things started working again. Is anyone looking into the issue??

Here is the output of my test with SMTP enabled trying to connect to SendGrid…

——————————————————————–

Test Message Sent

The result was:

bool(false)

The full debugging output is shown below:

PHPMailer Object
(
[Version] => 5.2.22
[Priority] =>
[CharSet] => UTF-8
[ContentType] => text/plain
[Encoding] => 7bit
[ErrorInfo] => SMTP Error: Could not connect to SMTP host.
[From] => [email protected]
[FromName] => WordPress
[Sender] =>
[ReturnPath] =>
[Subject] => WP Mail SMTP: Test mail to [email protected]
[Body] => This is a test email generated by the WP Mail SMTP WordPress plugin.
[AltBody] =>
[Ical] =>
[MIMEBody:protected] => This is a test email generated by the WP Mail SMTP WordPress plugin.

[MIMEHeader:protected] => Date: Tue, 12 Dec 2017 02:07:08 +0000
To: <test email>
From: WordPress
Subject: WP Mail SMTP: Test mail to <test email>
Message-ID:
X-Mailer: PHPMailer 5.2.22 (https://github.com/PHPMailer/PHPMailer)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8

[mailHeader:protected] =>
[WordWrap] => 0
[Mailer] => smtp
[Sendmail] => /usr/sbin/sendmail
[UseSendmailOptions] => 1
[PluginDir] =>
[ConfirmReadingTo] =>
[Hostname] =>
[MessageID] =>
[MessageDate] => Tue, 12 Dec 2017 02:07:08 +0000
[Host] => smtp.sendgrid.net
[Port] => 587
[Helo] =>
[SMTPSecure] => tls
[SMTPAutoTLS] => 1
[SMTPAuth] => 1
[SMTPOptions] => Array
(
)

[Username] => <our username>
[Password] => <our password>
[AuthType] =>
[Realm] =>
[Workstation] =>
[Timeout] => 300
[SMTPDebug] => 0
[Debugoutput] => echo
[SMTPKeepAlive] =>
[SingleTo] =>
[SingleToArray] => Array
(
)

[do_verp] =>
[AllowEmpty] =>
[LE] =>

[DKIM_selector] =>
[DKIM_identity] =>
[DKIM_passphrase] =>
[DKIM_domain] =>
[DKIM_private] =>
[DKIM_private_string] =>
[action_function] =>
[XMailer] =>
[smtp:protected] => SMTP Object
(
[Version] => 5.2.22
[SMTP_PORT] => 25
[CRLF] =>

[do_debug] => 0
[Debugoutput] => echo
[do_verp] =>
[Timeout] => 300
[Timelimit] => 300
[smtp_transaction_id_patterns:protected] => Array
(
[exim] => /[0-9]{3} OK id=(.*)/
[sendmail] => /[0-9]{3} 2.0.0 (.*) Message/
[postfix] => /[0-9]{3} 2.0.0 Ok: queued as (.*)/
)

[smtp_conn:protected] =>
[error:protected] => Array
(
[error] =>
[detail] =>
[smtp_code] =>
[smtp_code_ex] =>
)

[helo_rply:protected] =>
[server_caps:protected] =>
[last_reply:protected] => 221 <the domain> closing connection

)

[to:protected] => Array
(
[0] => Array
(
[0] => <test email>
[1] =>
)

)

[cc:protected] => Array
(
)

[bcc:protected] => Array
(
)

[ReplyTo:protected] => Array
(
)

[all_recipients:protected] => Array
(
[<test email>] => 1
)

[RecipientsQueue:protected] => Array
(
)

[ReplyToQueue:protected] => Array
(
)

[attachment:protected] => Array
(
)

[CustomHeader:protected] => Array
(
)

[lastMessageID:protected] =>
[message_type:protected] => plain
[boundary:protected] => Array
(
[1] => b1_e149de44f434a4008c844c8d5075ba9a
[2] => b2_e149de44f434a4008c844c8d5075ba9a
[3] => b3_e149de44f434a4008c844c8d5075ba9a
)

[language:protected] => Array
(
[authenticate] => SMTP Error: Could not authenticate.
[connect_host] => SMTP Error: Could not connect to SMTP host.
[data_not_accepted] => SMTP Error: data not accepted.
[empty_message] => Message body empty
[encoding] => Unknown encoding:
[execute] => Could not execute:
[file_access] => Could not access file:
[file_open] => File Error: Could not open file:
[from_failed] => The following From address failed:
[instantiate] => Could not instantiate mail function.
[invalid_address] => Invalid address:
[mailer_not_supported] => mailer is not supported.
[provide_address] => You must provide at least one recipient email address.
[recipients_failed] => SMTP Error: The following recipients failed:
[signing] => Signing Error:
[smtp_connect_failed] => SMTP connect() failed.
[smtp_error] => SMTP server error:
[variable_set] => Cannot set or reset variable:
[extension_missing] => Extension missing:
)

[error_count:protected] => 2
[sign_cert_file:protected] =>
[sign_key_file:protected] =>
[sign_extracerts_file:protected] =>
[sign_key_pass:protected] =>
[exceptions:protected] => 1
[uniqueid:protected] => e149de44f434a4008c844c8d5075ba9a
)

The SMTP debugging output is shown below: