I am setting up nginx as POP3 mail proxy to two 3rd party mail servers. Different domains, one of them uses SSL. Since I do not have that 3rd party's SSL certificate I use my own company certificate in nginx. That cert is properly signed but obviousy belongs to another domain (our domain). If I connect to the non-ssl server through nginx all works fine (port 110 on nginx and 3rd party serverby rmombassa - Nginx Mailing List - English