Expired certificate

All of a sudden I am getting the following message in my mail program. I have opted "to continue," as I don't really grasp the significance of all this. As far as I know I haven't done anything to cause this, though I did recently upgrade to 10.4.8.
I'm not very technically advanced so I need help in words of one syllable.
Thanks ~ Jane
"Mail was unable to verify the identity of this server, which has a certificate issued to "smtp.mac.com". The error was:
The certificate for this server has expired.
You might be connecting to a computer that is pretending to be "smtp.mac.com", and putting your confidential information at risk. Would you like to continue anyway?"
Mac OS X (10.1.x)

The only help I can offer you is to confirm that I am also getting that error message starting today. I posted a more detailed description in the dotmac forum, but since I saw your message here, I decided to also post a reply here. I don't think this has to do with 10.4.8 but probably with some problem with Apple's smtp mail servers. Hope they can correct this problem soon.

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rOYbne s: SSL 3_ G ET _CL IE NT _CE RT IF ICAT E:no ce rtific ate
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Hello Dino,
thanks very much for your reply.
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Hello,
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For people who own a Nokia 5800 XM, the error message of "Expired Certificate" when downloading applications onto the device will be mean you cannot load on new apps, which can be frustrating.
Firstly you should try to update the firmware on your phone by 1 of 3 ways.
Using FOTA (Firmware Over The Air). Another thread of mine will explain this in detail. You can find it here.
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Taking the handset to a Nokia Care point if you do not want to try the above 2 options.
**NOTE: Always be sure to make a back up of your personal details that are held on the phone as updating firmware will most likely delete any data left on the phone.
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Select Yes to remove the memory card.
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Type *#7370#
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I have done the above myself and downloaded the PDF reader from the "Download" application from within the handset and it installed with no error after these steps.
I hope this helps.
My posts are my opinion and in no way the direct views of Nokia.
If my posts are helpful, please give me some KUDOS using the green star on the left.

try to sign your app(s) through Opda site.
If you want to thank someone, just click on the blue star at the bottom of their post

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I bought my device 1 year ago, and installed on it several applications, like Splash ID, Profimail and other ones. Two days ago I updated the device, with update I lost everything but phone is working normally.
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Hi alesailor
Try changing date on your device back a year and see if will now install, then change date back afterwards. It is irritating when software developers don't renew the Symbian license.
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Does this help? Please, also note this and that …

Another Expired Certificate Error Thread

I've searched all over, and apologize in advance if there is already an answer for this.
I'm using the Symbian Belle OS and am running into the old problem of expired certificate errors when trying to install certain apps. The solution to this was to change the date on the phone so it coincides with that of the application you're trying to install. But that solution is no longer working.
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I did every year all the way back to 2000 but no luck
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Open Exchange power Shell and type
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Share the details.
Also, Basic troubleshooting first :
So if you do telnet from external machine to port 25 on server do you get a banner?
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Assuming its Self Assigned Certificate - To reissue Self Assigned Certificate follow :
http://blog.the-it-blog.co.uk/2013/01/25/re-issuing-a-self-signed-certificate-for-exchange-sbs/
Binu Kumar - MCP, MCITP, MCTS , MBA - IT , Director Aarbin Technology Pvt Ltd - Please remember to mark the replies as answers if they help and unmark them if they provide no help.

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I'm sorry if this is the wrong forum to ask this question. Also my knowledge in this area is somewhat limited, which I why I need your help :-)
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> Setting the validity period that high, means that the certificate could be cracked before expiry.
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