Debian GNU/Linux 11.4（bullseye）、Linux 5.10.0-17-amd64
已安装OpenSMTPD 6.8.0p2-3 amd64（包括opensmtpd-extras 6.7.1-2 amd64）并尝试测试发送邮件，但每次smtp调用（除smtp -h）都会导致此错误消息：
~# smtp -v
smtp: SSL_CTX_load_verify_locations: No such file or directory
服务器本身正在运行：
:~# telnet localhost 25
Trying ::1...
Connected to localhost.
Escape character is '^]'.
220 SERVERNAME.local ESMTP OpenSMTPD
quit
221 2.0.0 Bye
Connection closed by foreign host.
这个错误信息是在哪里产生的？他到底在寻找哪个文件或目录？在互联网上搜索这个错误信息，我一无所获。
smtpd.conf看起来像这样：
# $OpenBSD: smtpd.conf,v 1.10 2018/05/24 11:40:17 gilles Exp $
# This is the smtpd server system-wide configuration file.
# See smtpd.conf(5) for more information.
table aliases file:/etc/aliases
# To accept external mail, replace with: listen on all
#
listen on localhost
action "local" maildir alias <aliases>
action "relay" relay host "smtp://mailrelay.local" mail-from "@mydomain.info"
# Uncomment the following to accept external mail for domain "example.org"
#
# match from any for domain "example.org" action "local"
match for local action "local"
match from local for any action "relay"