Email client "(SMTP) secure178.inmotionhosting.com expired" error.
Sending email from my client Thunderbird I often (unpredictably) receive the following error message: "(SMTP) secure178.inmotionhosting.com expired error. Retry.". Thunderbird email account are set as follows: Incoming: IMAP Incoming server: secure178.inmotionhosting.com Port: 993 SSL: SSL/TLS Autentication: Normal Password Username: @.com Outgoing: SMTP Outgoing server: secure178.inmotionhosting.com SSL: SSL/TLS Port: 465 SSL: SSL/TLS Autentication: Normal Password Username: @.com O.S. Windows 10 build 10586 Thunderbird client version 38.5.1 Antivirus Avast! with "Email SSL scan" disabled.