Emails not sending – No Error

Good afternoon,

I recently started using this plugin. I had no problems creating a web application, and getting the information needed for OAuth2. I was able to authorize the application, however, when I attempt to send a test email I get the following output:

Connection: opening to smtp.gmail.com:587, timeout=300, options=array ()
Connection: opened
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “220 smtp.gmail.com ESMTP 75sm5658451pfy.32 – gsmtp”
SERVER -> CLIENT: 220 smtp.gmail.com ESMTP 75sm5658451pfy.32 – gsmtp
CLIENT -> SERVER: EHLO nashvillecprcertification.com
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “250-smtp.gmail.com at your service, [162.144.83.51]”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]”
SMTP -> get_lines(): $str is “250-SIZE 35882577”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577”
SMTP -> get_lines(): $str is “250-8BITMIME”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME”
SMTP -> get_lines(): $str is “250-STARTTLS”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-STARTTLS”
SMTP -> get_lines(): $str is “250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $str is “250-PIPELINING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING”
SMTP -> get_lines(): $str is “250-CHUNKING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING”
SMTP -> get_lines(): $str is “250 SMTPUTF8”
SERVER -> CLIENT: 250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
CLIENT -> SERVER: STARTTLS
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “220 2.0.0 Ready to start TLS”
SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
CLIENT -> SERVER: EHLO nashvillecprcertification.com
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “250-smtp.gmail.com at your service, [162.144.83.51]”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]”
SMTP -> get_lines(): $str is “250-SIZE 35882577”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577”
SMTP -> get_lines(): $str is “250-8BITMIME”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME”
SMTP -> get_lines(): $str is “250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH”
SMTP -> get_lines(): $str is “250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $str is “250-PIPELINING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING”
SMTP -> get_lines(): $str is “250-CHUNKING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING”
SMTP -> get_lines(): $str is “250 SMTPUTF8”
SERVER -> CLIENT: 250-smtp.gmail.com at your service, [162.144.83.51]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
Auth method requested: XOAUTH2
Auth methods available on the server: LOGIN,PLAIN,XOAUTH2,PLAIN-CLIENTTOKEN,OAUTHBEARER,XOAUTH
CLIENT -> SERVER: QUIT
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “221 2.0.0 closing connection 75sm5658451pfy.32 – gsmtp”
SERVER -> CLIENT: 221 2.0.0 closing connection 75sm5658451pfy.32 – gsmtp
Connection: closed

I then never receive the email to my account.

My server information is

OS: Linux 2.6.32-573.26.1.el6.x86_64 #1 SMP Wed May 4 00:57:44 UTC 2016 x86_64
PHP version: 5.3.26 (PHPMailer requires PHP 5.4 or later in order to send email)
WordPress version: 4.5.3
WordPress multisite: No
openssl: Available
allow_url_fopen: Disabled
stream_socket_client: Available
fsockopen: Available

I was able to successfully send from my dev environment which is a local vagrant server on my computer.

I was reading in some of the tickets that this might be a result of the curl not being installed so I tried another dev site of mine, ensured that it has curl installed and updated and got roughly the same information.

Connection: opening to smtp.gmail.com:587, timeout=300, options=array ()
Connection: opened
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “220 smtp.gmail.com ESMTP f62sm11865944ywh.19 – gsmtp”
SERVER -> CLIENT: 220 smtp.gmail.com ESMTP f62sm11865944ywh.19 – gsmtp
CLIENT -> SERVER: EHLO robrosdemo.ddns.net
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “250-smtp.gmail.com at your service, [172.3.43.133]”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]”
SMTP -> get_lines(): $str is “250-SIZE 35882577”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577”
SMTP -> get_lines(): $str is “250-8BITMIME”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME”
SMTP -> get_lines(): $str is “250-STARTTLS”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-STARTTLS”
SMTP -> get_lines(): $str is “250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $str is “250-PIPELINING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING”
SMTP -> get_lines(): $str is “250-CHUNKING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING”
SMTP -> get_lines(): $str is “250 SMTPUTF8”
SERVER -> CLIENT: 250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
CLIENT -> SERVER: STARTTLS
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “220 2.0.0 Ready to start TLS”
SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
CLIENT -> SERVER: EHLO robrosdemo.ddns.net
SMTP -> get_lines(): $data is “”
SMTP -> get_lines(): $str is “250-smtp.gmail.com at your service, [172.3.43.133]”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]”
SMTP -> get_lines(): $str is “250-SIZE 35882577”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577”
SMTP -> get_lines(): $str is “250-8BITMIME”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME”
SMTP -> get_lines(): $str is “250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH”
SMTP -> get_lines(): $str is “250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES”
SMTP -> get_lines(): $str is “250-PIPELINING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING”
SMTP -> get_lines(): $str is “250-CHUNKING”
SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING”
SMTP -> get_lines(): $str is “250 SMTPUTF8”
SERVER -> CLIENT: 250-smtp.gmail.com at your service, [172.3.43.133]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
Auth method requested: XOAUTH2
Auth methods available on the server: LOGIN,PLAIN,XOAUTH2,PLAIN-CLIENTTOKEN,OAUTHBEARER,XOAUTH

but no email.

My server information is

OS: Linux raspberrypi 3.18.11+ #781 PREEMPT Tue Apr 21 18:02:18 BST 2015 armv6l
PHP version: 5.4.41-0+deb7u1
WordPress version: 4.5.3
WordPress multisite: No
openssl: Available
allow_url_fopen: Enabled
stream_socket_client: Available
fsockopen: Available

Any help would be appreciated.

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