Mail error: (SMTP) secure***.inmotionhosting.com expired
I had many troubles to set up my e-mail account on Thunderbird client. Now it seems to work and I can see the email folders tree and all the emails, but I receive frequent unpredictable "(SMTP) secure178.inmotionhosting.com expired, please retry." error messages when I send e-mails from the client.
E-mail client: Thunderbird 38.5.1
Cilent configuration (as suggested in your Thunderbird email client configuration instructions)
Incoming Mail: IMAP
Incoming Server: secure178.inmotionhosting.com
SSL: SSL/TLS
Port: 993
Autentication: Normal Password
User name: @.com
Incoming Mail: SMTP
Outcoming Server: secure178.inmotionhosting.com
SSL: SSL/TLS
Port: 465
Autentication: Normal Password
User name: @.com
Moreover I have disabled antivirus SSL mail scanning.