On Wed, Mar 06, 2024 at 06:19:10PM +, Simon Harrison wrote:
> I've got an odd problem. I'm using smtpd as a relay. Everything works
> fine, except, every 2-3 weeks I get the following error (on my local
> machine):
>
> 47b6501430167caa mta error reason=IO Error: certificate verification
> failed: certificate has expired
>
> and a few lines down:
>
> result="TempFail" stat="Network error on destination MXs"
>
> Looking at the log on the server:
>
> connected address=my.ip.address host=me.at.myisp
>
> disconnected reason="io-error: handshake failed: error:0A000415:SSL
> routines::sslv3 alert certificate expired"
>
> I've dealt with this up until now by restarting opensmtpd on the server
> and then eveyrthing is fine again. But, I could do with some help
> getting it sorted once and for all.
>
>
> Local machine: Linux Mint 21.3
> Servers: Debian 12.5
>
>
>
>
Are you using Let's Encrypt certificates on the server?
If so, don't forget to restart smtpd after renewing the certificate, so
that it picks up the new certificate. Otherwise it will keep using the
expired one.
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