On 2022-02-08 15:53, Wayne Spivak wrote:
Hi -
I am running Postfix 3.6.4 with Dovecot 2.3.17.1 (476cd46418).
I have a multi-signed cert from Entrust.
The cert works fine on port 25.
Certificates on port 25 verify ok for me.
However, on Port 587 I get an error: c
Certificates on port 587 verify ok for me.
[root@mcq wbs]# openssl s_client -connect mcq.sbanetweb.com:993
-servername mcq.sbanetweb.com
Now you check port 993? For me the certificates also don't verify on
port 993.
Have you built your certificate file correctly?
The intermediate cert seems to be missing.
For port 25, 587 you send a chain of 3 certificates.
For port 993 you only send one certificate.
CONNECTED(00000003)
depth=0 C = US, ST = New York, L = Bellmore, O = SBA Consulting LTD,
CN = mcq.sbanetweb.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 C = US, ST = New York, L = Bellmore, O = SBA Consulting LTD,
CN = mcq.sbanetweb.com
verify error:num=21:unable to verify the first certificate
verify return:1
depth=0 C = US, ST = New York, L = Bellmore, O = SBA Consulting LTD,
CN = mcq.sbanetweb.com
verify return:1
---
Certificate chain
0 s:C = US, ST = New York, L = Bellmore, O = SBA Consulting LTD, CN
= mcq.sbanetweb.com
i:C = US, O = "Entrust, Inc.", OU = See www.entrust.net/legal-terms
[1], OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN =
Entrust Certification Authority - L1K
[root@mcq wbs]# dovecot -n
# 2.3.17.1 (476cd46418): /etc/dovecot/dovecot.conf
# OS: Linux 5.16.5-200.fc35.x86_64 x86_64 Fedora release 35 (Thirty
Five)
# Hostname: mcq.sbanetweb.com
auth_mechanisms = plain login
disable_plaintext_auth = no
mbox_write_locks = fcntl
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
driver = pam
}
protocols = imap
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener auth-userdb {
group = postfix
mode = 0666
user = postfix
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service submission-login {
inet_listener submission {
port = 587
}
}
ssl = required
ssl_cert = </etc/postfix/tls/ServerCertificate.pem
In what order are the certificates in here?
See
https://doc.dovecot.org/configuration_manual/dovecot_ssl_configuration/#id7
ssl_cipher_list =
ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
ssl_client_ca_dir = /etc/postfix/tls/
ssl_client_ca_file = ChainBundle.pem
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
userdb {
driver = passwd
}
protocol imap {
mail_max_userip_connections = 15
}
Any ideas?
Wayne Spivak
SBANETWEB.com
Links:
------
[1] http://www.entrust.net/legal-terms
--
Christian Kivalo
