fetchmail and ssl certificates

Hi,

Here is my .fetchmailrc

set daemon 301
poll pop.gmx.com
     protocol POP3
     service 995
     authenticate password
     user "[email protected]"
     ssl
     sslfingerprint "5C:6B:60:FE:80:97:0B:13:EB:36:A3:66:48:28:7A:61:5E:B2:25:DA"
mda 'procmail -d %s'
keep

So, it worked fine till last night, but since this morning, this has not been working. Here is what I get:

$ fetchmail -c
fetchmail: pop.gmx.com fingerprints do not match!
fetchmail: OpenSSL reported: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
fetchmail: pop.gmx.com: SSL connection failed.
fetchmail: socket error while fetching from [email protected]@pop.gmx.com


Here is how I verified my fingerprint:

~$ openssl s_client -servername gmx.com -connect pop.gmx.com:995 | openssl x509 -fingerprint -noout
depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
verify return:1
depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = GeoTrust RSA CA 2018
verify return:1
depth=0 C = DE, ST = Rheinland-Pfalz, L = Montabaur, O = 1&1 Mail & Media GmbH, CN = mout.gmx.com
verify return:1
SHA1 Fingerprint=5C:6B:60:FE:80:97:0B:13:EB:36:A3:66:48:28:7A:61:5E:B2:25:DA

Any suggestions as to what I am doing wrong?

I am on F32 (fully updated) which has fetchmail-6.4.1 and openssl-1:1.1.1g.

Many thanks,
Ranjan