Hi Rendell,
I use smtp.gmail.com as the host and 587 as the port for this (in Server Settings > Email), and it's been working fine.
To see the connection for debug purposes, use Help > Diagnostics > Detailed Logs, and check the box for SMTP connections.
Then open the edit window for your email notifier and click the test notifier button. My connection looked like this:
Connect'd: SMTP connection to "209.85.200.108:587"
Recv'd: 220 smtp.gmail.com ESMTP c97-v6sm2603117itd.19 - gsmtp
Sent: EHLO [10.65.49.43]
Recv'd: 250-smtp.gmail.com at your service, [50.241.106.41]
Recv'd: 250-SIZE 35882577
Recv'd: 250-8BITMIME
Recv'd: 250-STARTTLS
Recv'd: 250-ENHANCEDSTATUSCODES
Recv'd: 250-PIPELINING
Recv'd: 250-CHUNKING
Recv'd: 250 SMTPUTF8
Sent: STARTTLS
Recv'd: 220 2.0.0 Ready to start TLS
Sent: EHLO [10.65.49.43]
Connect'd: SMTP connection to "209.85.200.108:587"
Recv'd: 250-smtp.gmail.com at your service, [50.241.106.41]
Recv'd: 250-SIZE 35882577
Recv'd: 250-8BITMIME
Recv'd: 250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
Recv'd: 250-ENHANCEDSTATUSCODES
Recv'd: 250-PIPELINING
Recv'd: 250-CHUNKING
Recv'd: 250 SMTPUTF8
Sent: AUTH PLAIN AG1pa2VtYWswMDlAZ21haWwuY29tAGphbWVzYmxvbmQxOA==
Recv'd: 235 2.7.0 Accepted
Sent: MAIL FROM:<[email protected]>
Recv'd: 250 2.1.0 OK c97-v6sm2603117itd.19 - gsmtp
Sent: RCPT TO:<[email protected]>
Recv'd: 250 2.1.5 OK c97-v6sm2603117itd.19 - gsmtp
Sent: DATA
Recv'd: 354 Go ahead c97-v6sm2603117itd.19 - gsmtp
Recv'd: 250 2.0.0 OK 1532698070 c97-v6sm2603117itd.19 - gsmtp
Sent: QUIT
Recv'd: 221 2.0.0 closing connection c97-v6sm2603117itd.19 - gsmtp
Disconnect'd: SMTP connection to "209.85.200.108:587"
If the failure reason can't be corrected, please send a packet capture of a connection attempt to support.helpsystems.com and we'll open a support case.
best regards,
Mike Maki
InterMapper Tech Support