站点使用了 ssl 后，用 chrome 无法访问了，用 safari 访问正常，求解

服务器检查没有问题

DNS resolves 's.domain.com' to （ip）
SSL certificate

Common Name = s.domain.com
Subject Alternative Names = s.domain.com, www.s.domain.com
Issuer = COMODO RSA Domain Validation Secure Server CA
Serial Number = E78D5F18BFCA4F674DB92E0FDA4E031D370
SHA1 Thumbprint = 61010A635E84922318663E30407E7DF8FAC25CF68A00C
Key Length = 2048 bit
Signature algorithm = SHA256 + RSA (excellent)
Secure Renegotiation: Supported
This certificate does not use a vulnerable Debian key (this is good)

SSL Certificate has not been revoked

OCSP Staple:
OCSP Origin:
CRL Status:

SSL Certificate expiration
The certificate expires August 3, 2015 (364 days from today)
Certificate Name matches s.domain.com
Subject s.domain.com
Valid from 03/Aug/2014 to 03/Aug/2015
Issuer COMODO RSA Domain Validation Secure Server CA
SSL Certificate is correctly installed

Congratulations! This certificate is correctly installed.

用safari访问也正常，但用chrome访问就是一个禁止访问的的界面，提示`this certificate was signed by an untrusted issuer`，求解！