mailR: sending email to server failed - r

Question

I am trying to send an email using the mailR package. I can do this at home, from my personal computer and internet, but not at work, where we have company installed and managed firewall, antivirus, etc. When I try, I get a
long error message, finishing with:
Error: EmailException (Java): Sending the email to the following server failed : smtp.gmail.com:465
I will paste the complete error message at the bottom of this question.
The code I am using is the following:
send.mail(from="MyEmail#gmail.com",
to="MyOtherEmail#hotmail.com",
subject="Test Email",
body="Test body",
html=T,
smtp=list(host.name = "smtp.gmail.com",
port = 465, #587,
user.name = "MyEmail#gmail.com",
passwd = "xxxx",
ssl=T), #tls = T),
authenticate=T,
debug=T)
After reading a few similar questions, I have tried changing the port to 587, simultaneously with tls=T instead of ssl=T. I already have less-secure apps enabled on my google account, and I do not have ''two factor' authentification enabled, but I don't think the problem is related to my google account, as the code works from home. I do not have the option of turning antivirus software off, this is company controlled and is not possible for me.
Using the Debug option in send.mail, the final line, where I guess the problem comes up was:
DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 465, isSSL false
Does anybody have any ideas about how I can get an email notification from R to let me know that my script has finished running and what the outcome was, despite my firewall and antivirus restrictions? I am not fussy about using the mailR package - I also tried mail as suggested in this post:
sending mail from R (mailR)
with the following code:
sendmail("MyEmail#gmail.com", "mail of R", "Testing!")
but with this I got the following error message:
Error in file(con, "r") : cannot open the connection
In addition: Warning message:
In file(con, "r") :
cannot open URL 'http://rmail.linhi.de/rmail.php?Email=MyEmail#gmail.com&Passwort=rmail&Betreff=mail<of<R&Nachricht=Testing!': HTTP status was '404 Not Found'
Here is the full Debug result and error message I get using send.mail:
>DEBUG: JavaMail version 1.5.2
DEBUG: successfully loaded resource: /META-INF/javamail.default.providers
DEBUG: Tables of loaded providers
DEBUG: Providers Listed By Class Name: {com.sun.mail.smtp.SMTPSSLTransport=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Oracle], com.sun.mail.smtp.SMTPTransport=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle], com.sun.mail.imap.IMAPSSLStore=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Oracle], com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Oracle], com.sun.mail.imap.IMAPStore=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle], com.sun.mail.pop3.POP3Store=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Oracle]}
DEBUG: Providers Listed By Protocol: {imaps=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Oracle], imap=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle], smtps=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Oracle], pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Oracle], pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Oracle], smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle]}
DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle]
DEBUG SMTP: need username and password for authentication
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 465, isSSL false
org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1410)
at org.apache.commons.mail.Email.send(Email.java:1437)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at RJavaTools.invokeMethod(RJavaTools.java:386)
Caused by: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 465; timeout 60000;
nested exception is:
java.net.ConnectException: Connection timed out: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2053)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:697)
at javax.mail.Service.connect(Service.java:386)
at javax.mail.Service.connect(Service.java:245)
at javax.mail.Service.connect(Service.java:194)
at javax.mail.Transport.send0(Transport.java:253)
at javax.mail.Transport.send(Transport.java:124)
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1400)
... 6 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:310)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:215)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2019)
... 13 more