gmail for notifications - SASL authentication failed error

I'm trying to get notifications working through my regular gmail account and I can't seem to get it working. TO verify that it wasn't a firewall issue from my OMV box I ran
nc -zv smtp.gmail.com 465
with results of
DNS fwd/rev mismatch: gmail-smtp-msa.l.google.com != pf-in-f108.1e100.net
DNS fwd/rev mismatch: gmail-smtp-msa.l.google.com != pf-in-f109.1e100.net
gmail-smtp-msa.l.google.com [173.194.202.108] 465 (ssmtp) open
I've also tried port 587
nc -zv smtp.gmail.com 587
DNS fwd/rev mismatch: gmail-smtp-msa.l.google.com != pf-in-f108.1e100.net
DNS fwd/rev mismatch: gmail-smtp-msa.l.google.com != pf-in-f109.1e100.net
gmail-smtp-msa.l.google.com [173.194.202.108] 587 (submission) open

That suggests to me that there is nothing wrong with my network setup.

I set the notification post up with
SMTP server - smtp.gmail.com
SMTP port - 465
Use SSL/TTS is enabled
sender email is myemail@gmail.com
username myemail@gmail.com
password thecorrectone
primary email myotheremail@gmail.com
secondary email blank

saved, applied and then I send a test email from OMV.

nothing arrives and in the system log I see
Sep 24 21:54:02 openmediavault postfix/cleanup[2850]: A66568C0E8A: message-id=<20150925045402.A66568C0E8A@openmediavault.localdomain>
Sep 24 21:54:02 openmediavault postfix/qmgr[2677]: A66568C0E8A: from=<myemail@gmail.com>, size=486, nrcpt=1 (queue active)
Sep 24 21:54:02 openmediavault postfix/smtp[2851]: CLIENT wrappermode (port smtps/465) is unimplemented
Sep 24 21:54:02 openmediavault postfix/smtp[2851]: instead, send to (port submission/587) with STARTTLS

If I change to SMTP port 587 and send another test email nothing arrives and the system log shows
Sep 24 22:01:13 openmediavault postfix/pickup[7194]: B649D8C0D6F: uid=0 from=<root>
Sep 24 22:01:13 openmediavault postfix/cleanup[7454]: B649D8C0D6F: message-id=<20150925050113.B649D8C0D6F@openmediavault.localdomain>
Sep 24 22:01:13 openmediavault postfix/qmgr[7195]: B649D8C0D6F: from=<myemail@gmail.com>, size=486, nrcpt=1 (queue active)
Sep 24 22:01:13 openmediavault postfix/error[7456]: B649D8C0D6F: to=<myotheremail@gmail.com>, relay=none, delay=0.25, delays=0.19/0/0/0.06, dsn=4.7.14, status=deferred (delivery temporarily suspended: SASL authentication failed; server smtp.gmail.com[74.125.25.108] said: 534-5.7.14 <https://accounts.google.com/Co…&plt=AKgnsbv9N?534-5.7.14 Ha-DYso80WLjNXoHZ98PHZuU05xWdoTbsEy2YDhpQ08lKx3zGqp3IXGZBmVdxkyYRDRsEu?534-5.7.14 sZuUve_hTKE1JXBZ_7JNJ3STVSlsup6I2GriFeI-TKTpMLwgDXXBljjFw4hHoZBx1dcnkR?534-5.7.14 JAyXHbPz7en95NwSI9a4-AM6Xc8vEOb9aakjz9K_165sTVHfibA5FWrtAYcJRZ3hOoLY48?534-5.7.14 9uWcHiYuunrQfGIA5s9ZOmk8H93I> Please log in via your web browser and?534-5.7.14 then try again.?534-5.7.14 Learn more at?534 5.7.14 https://support.google.com/mail/answer/78754 de4sm1431166pbb.60 - gsmtp)

I logged out and back into gmail via the web browser as I think that's what the error message was about and that didn't change anything. I intentionally set the password wrong and sent another test messages
system log shows
Sep 24 22:12:39 openmediavault postfix/pickup[16012]: 486518C0D75: uid=0 from=<root>
Sep 24 22:12:39 openmediavault postfix/cleanup[16124]: 486518C0D75: message-id=<20150925051239.486518C0D75@openmediavault.localdomain>
Sep 24 22:12:39 openmediavault postfix/qmgr[16013]: 486518C0D75: from=<myemail@gmail.com>, size=486, nrcpt=1 (queue active)
Sep 24 22:12:39 openmediavault postfix/smtp[16126]: 486518C0D75: SASL authentication failed; server smtp.gmail.com[173.194.202.109] said: 535-5.7.8 Username and Password not accepted. Learn more at?535 5.7.8 https://support.google.com/mail/answer/14257 d13sm1520563pbu.17 - gsmtp
Sep 24 22:12:40 openmediavault postfix/smtp[16126]: 486518C0D75: SASL authentication failed; server smtp.gmail.com[173.194.202.108] said: 535-5.7.8 Username and Password not accepted. Learn more at?535 5.7.8 https://support.google.com/mail/answer/14257 pi9sm1485881pbb.96 - gsmtp
Sep 24 22:12:40 openmediavault postfix/smtp[16126]: connect to smtp.gmail.com[2607:f8b0:400e:c00::6d]:587: Network is unreachable
Sep 24 22:12:40 openmediavault postfix/smtp[16126]: 486518C0D75: to=<myotheremail@gmail.com>, relay=none, delay=1.1, delays=0.22/0.02/0.87/0, dsn=4.4.1, status=deferred (connect to smtp.gmail.com[2607:f8b0:400e:c00::6d]:587: Network is unreachable)

Any suggestions? I can't be the only person here wanting gmail for notifications

thanks, that matches mine so it has to be something to do with my authentication on google... I'll have to see what I can find there.

dupe

sorry it means that I somehow posted the same thing twice and since I can't delete the post I just edited it to say dupe to mean it's a duplicate

Ok for anyone else that comes across this issue I got it working.

my settings are the same as above, smtp.gmail.com, Port 587 SSL/TTS and require authentication both turned on. In gmail I had to activate 2 step verification, at https://myaccount.google.com/security

When that was setup App Passwords showed up below the 2 step verification. Click on that

I added an app called OMV it generated a password.

In OMV I used myemailaddress@gmail.com as the username and the generated password. Save, apply, test email arrives.

Done.