Can’t get Imap working over tls
on https no problems:
s_client -connect mydomain.com:https
CONNECTED(00000005)
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
verify return:1
depth=0 CN = mydomain.com
verify return:1
Certificate chain
0 s:CN = mydomain.com
i:C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
1 s:C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
i:O = Digital Signature Trust Co., CN = DST Root CA X3
on imap:
openssl s_client -connect mydomain.com:imaps
CONNECTED(00000005)
depth=0 CN = mydomain.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 CN = mydomain.com
verify error:num=21:unable to verify the first certificate
verify return:1
Certificate chain
0 s:CN = mydomain.com
i:C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
Derver debian 9 with 6 domains.