我目前正在configurationpostfix和dovecot。 我目前正在努力与SSL + IMAPlogin。 我启用debugging日志logging，但无法弄清楚什么是错的。 这里是日志：
Oct 8 19:16:08 dirty-harry dovecot: auth: Debug: auth client connected (pid=1776) Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2002, ret=-1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2002, ret=-1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully [217.240.25.1] Oct 8 19:16:08 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully [217.240.25.1] Oct 8 19:16:13 dirty-harry dovecot: imap-login: Debug: SSL alert: close notify [217.240.25.1] Oct 8 19:16:13 dirty-harry dovecot: imap-login: Disconnected (no auth attempts in 5 secs): user=<>, rip=217.240.25.1, lip=xxx, TLS: Disconnected, session=<bUkMr10+aADZ8BkB> SSL以某种方式似乎工作，当我调用comman：
openssl s_client -connect <mydomain>.net:993
我得到SSL协商成功。
这是我的dovecot -n dovecotconfiguration
auth_debug_passwords = yes auth_mechanisms = plain login disable_plaintext_auth = no mail_location = maildir:/var/mail/vhosts/%d/%n mail_privileged_group = mail 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocols = imap lmtp service auth-worker { user = vmail } service auth { unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 0 } } service lmtp { unix_listener lmtp { group = postfix mode = 0600 user = postfix } } ssl = required ssl_cert = </<cert>.crt ssl_key = </<cert>.key userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } verbose_ssl = yes
SQL的东西正在工作，并返回正确的数据。
编辑：按照评论中的请求我添加auth_debug = yes并尝试login：
user@databueck01:/$ telnet domain.net 993 Trying <ip>... Connected to domain.net. Escape character is '^]'. a10 login [email protected] password Connection closed by foreign host.
日志看起来像：
Oct 8 19:42:34 dirty-harry dovecot: imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Oct 8 19:42:34 dirty-harry dovecot: imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Oct 8 19:42:34 dirty-harry dovecot: imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [217.240.25.1] Oct 8 19:42:34 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [217.240.25.1] Oct 8 19:42:34 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv2/v3 read client hello A [217.240.25.1] Oct 8 19:42:34 dirty-harry dovecot: auth: Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth Oct 8 19:42:34 dirty-harry dovecot: auth: Debug: Module loaded: /usr/lib/dovecot/modules/auth/libdriver_mysql.so Oct 8 19:42:34 dirty-harry dovecot: auth: Debug: Read auth token secret from /var/run/dovecot/auth-token-secret.dat Oct 8 19:42:34 dirty-harry dovecot: auth: Debug: auth client connected (pid=1941) Oct 8 19:42:46 dirty-harry dovecot: imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv2/v3 read client hello A [217.240.25.1] Oct 8 19:42:46 dirty-harry dovecot: imap-login: Disconnected (no auth attempts in 12 secs): user=<>, rip=217.240.25.1, lip=<ip>, TLS handshaking: SSL_accept() failed: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol, session=<y7v+DV4+cADZ8BkB>