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Problem with TLS and email reception.

Hello,

I am having problems with receiving email from some systems.  The error they get is:

Error negotiating TLS: tls: failed to parse certificate from server: asn1: time did not serialize back to the original value and may be invalid:

 

I am on the most recent firmware for the UTM, and can't find a way to fix this.  Is anyone else receiving this? Or have a fix for this?

 

Thanks!



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  • Doug's suggestion is where I would start.  Normally, it's the WebAdmin certificate that's used.  You wouldn't have to delete that or replace it in other spots, just make a new one like:

    The VPN ID should be the FQDN that's the hostname of your UTM.  Just select the new cert on the 'Advanced' tab of 'SMTP Proxy'.

    Did that work for you?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • Doug's suggestion is where I would start.  Normally, it's the WebAdmin certificate that's used.  You wouldn't have to delete that or replace it in other spots, just make a new one like:

    The VPN ID should be the FQDN that's the hostname of your UTM.  Just select the new cert on the 'Advanced' tab of 'SMTP Proxy'.

    Did that work for you?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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