Re: SMTP Error "Must issue a STARTTLS command first" in ClearPass
05-08-2019 01:40 AM - edited 05-08-2019 01:41 AM
We have the same issue, and works fine as you said with SSL(port 465):
1) I don't import any CA or certificate
2) Config gmail with allow low security App
2) Fail send mail through ccpm->external->messaging setup
3) Probe to send trhough guest->config -> receipt -> customize email recepit . It works FINE!
Our version of ClearPass is 6.7