how to eliminate the message warning of pop3s of my mail clients?

I have configured a server of mail with SlES 9+postfix+imaps+pop3s, but I want to eliminate the warning of security when I open the mail client, I have tried to install the certificate, installing it from Internet Explorer https://x.x.x.x:993, I install the certificate but it doesn't work..

any idea?

portobancorAsked:
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jlevieCommented:
My guess is that you are using a self-signed certificate, which will generate the warning. If you purchase a commercial certificate (Verisign, Thawte, etc) that warning should go a way.
portobancorAuthor Commented:
I am using a certificate that generated manually, suse doesn't work with the ports 143 and 110, you have to certify them , 993 and 995 how eliminate the warning?
portobancorAuthor Commented:
excuse me , my english is not very good
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jlevieCommented:
> I am using a certificate that generated manually

That's what I thought and it would be a self-signed certificate. Every client will generate a warning message since the certificate does not come from a "trusted source". If you obtain a certificate from any of the "trusted" Certificate Authorities (like Verisign, Thawte, etc) the mail clients won't generate that warning.
portobancorAuthor Commented:
I have to buy a certificate of  Verisign o Thawte ?   there won't be a way to remove, I have looked  for google on this topic and I don't find anything
jlevieCommented:
>  I have to buy a certificate of  Verisign o Thawte ?   there won't be a way to remove

That's correct. You either have to have a real certificate or tell your users to ignore the warning and accept the certificate.

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