配置个邮件发送，后报错。但是邮件能正常发送，只是有这个报错。如何解决？

之前的配置

vi  /etc/mail.rc

set from=DBA@xxx.com set smtp=smtps://smtp.feishu.cn:465 set smtp-auth-user=DBA@xxxx.com set smtp-auth-password=xxx set smtp-auth=login set ssl-verify=ignore set nss-config-dir=/etc/pki/nssdb

做如下操作：

获取邮件服务器证书：

echo   -n " " |  openssl s_client -connect smtp.feishu.cn:465 | sed -ne  '/-BEGIN CERTIFICATE-/,/-END CERTIFIICATE-/p'  >  /etc/pki/nssdb/feishu.crt

把证书添加到受信任表：

certutil -A -n 'feishu' -t "P,P,P" -d /etc/pki/nssdb -i /etc/pki/nssdb/feishu.crt

mkdir ~/.certs

echo   -n " " |  openssl s_client -connect smtp.feishu.cn:465 | sed -ne  '/-BEGIN CERTIFICATE-/,/-END CERTIFIICATE-/p'  >  ~/.certs/feishu.crt certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/feishu.crt certutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/feishu.crt

验证： certutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu"  -d ./ -i ~/.certs/feishu.crt Notice: Trust flag u is set automatically if the private key is present.

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