Can I trust an expired certificate?

Hi,
is there any setting that will let me trust an expired certificate? I'm communicating with a server that has an unsigned expired certificate. The funny thing is that this behavior seems to has changed on different jvm-versions, on one of my client-machines I'm running a jvm version 1.5.0_06-b05, which is accepting the expired certificate. On a different client I'm running jvm version 1.5.0_07-b03, and this version is NOT accepting the expired certificate, I'm using the exact same trust store file!?
Of course the solution is to install a valid certificate on the server but that is out of my control...
Regards
Magnus

is there any setting that will let me trust an expired certificate?That's a contradiction in terms. The person who signed it, or self-signed it, gave it an expiry date beyond which you shouldn't trust it. So you shouldn't trust it.
Of course the solution is to install a valid certificate on the server but that is out of my control...It probably isn't out of your control at all. If it's a third party, complain to their customer service or IT department. If it's internal to your organization, ditto, and in both cases raise it as a major security risk for the project - get it elevated to project manager level or beyond. Be the squeaky wheel that gets the grease.

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