I'm trying to set up Gmail using a desktop client, via IMAP. It works, except that my client is complaining about the SSL cert:

Issuer: CN=Google Internet Authority,O=Google Inc,C=US
Subject: CN=imap.gmail.com,O=Google Inc,L=Mountain View,ST=California,C=US
Fingerprint: f4:3c:f0:30:6a:03:d4:5b:c8:5b:6e:11:ed:19:1d:a6
Signature: BAD

It seems odd that Google would use a self signed cert here, but a cert signed by Thawte on their website. The Google CA is not in my /etc/ssl/certs. Does anyone know if this is the correct cert? Is my trusted CA list just hopelessly out of date?

  • What client do you use? I'm using both Mail.app and Notify and I didn't had any problems with the certificates.
    – Alex
    Jul 8, 2010 at 20:01
  • Evolution, part of GNOME.
    – Andrew
    Jul 9, 2010 at 13:46

1 Answer 1


The IMAP cert is signed by a "Google Internet Authority" cert which is in turn signed by Equifax your client is not following the certificate chain of trust properly.

  • 1
    Or the client doesn't trust the "Equifax" root cert in question. Jul 8, 2010 at 23:04
  • That's probably it, will look into it when I get home. Thanks!
    – Andrew
    Jul 9, 2010 at 13:46
  • @Andrew: what turned out to be wrong? Apr 24, 2012 at 0:33

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