我在使用邮件服务器时遇到了一些问题。 我无法发送或接收任何邮件。
以下是我在/var/log/mail.info看到的内容：
Aug 12 20:09:34 REDACTED postfix/submission/smtpd[23064]: connect from ***[***] Aug 12 20:09:34 REDACTED postfix/submission/smtpd[23064]: Anonymous TLS connection established from ***[***]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits) Aug 12 20:09:34 REDACTED postfix/submission/smtpd[23064]: 9ADA33260108: client=***[***], sasl_method=PLAIN, sasl_username=*** Aug 12 20:09:34 REDACTED postfix/cleanup[23068]: 9ADA33260108: message-id=<***@mail.gmail.com> Aug 12 20:09:34 REDACTED spamd[30569]: spamd: connection from localhost.localdomain [127.0.0.1] at port 36295 Aug 12 20:09:34 REDACTED spamd[30569]: spamd: setuid to spamass-milter succeeded Aug 12 20:09:34 REDACTED spamd[30569]: spamd: processing message <*@mail.gmail.com> for spamass-milter:109 Aug 12 20:09:34 REDACTED spamd[30569]: spamd: clean message (-1.0/3.0) for spamass-milter:109 in 0.1 seconds, 1482 bytes. Aug 12 20:09:34 REDACTED spamd[30569]: spamd: result: . 0 - ALL_TRUSTED,HTML_MESSAGE scantime=0.1,size=1482,user=spamass-milter,uid=109,required_score=3.0,rhost=localhost.localdomain,raddr=127.0.0.1,rport=36295,mid=<***@mail.gmail.com>,autolearn=unavailable Aug 12 20:09:34 REDACTED postfix/cleanup[23068]: 9ADA33260108: milter-reject: END-OF-MESSAGE from ***[***]: 4.7.1 Service unavailable - try again later; from=<***> to=<***> proto=ESMTP helo=<mail-it0-f45.google.com> Aug 12 20:09:34 REDACTED spamd[30568]: prefork: child states: II Aug 12 20:09:34 REDACTED postfix/submission/smtpd[23064]: disconnect from mail-it0-f45.google.com[***]
以下是Telnet的一些输出：
*@*:/home/mydir# telnet localhost 25 Trying ::1... Connected to localhost.localdomain. Escape character is '^]'. 220 * ESMTP Postfix HELO example.com 250 * MAIL FROM:<*@*> 250 2.1.0 Ok RCPT TO:<*@*> 250 2.1.5 Ok DATA 354 End data with <CR><LF>.<CR><LF> test . 451 4.7.1 Service unavailable - try again later
最后，这是我的main.cf ：
# See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters #smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem #smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key #smtpd_use_tls=yes #smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache #smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = example mydomain = example.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = $mydomain mydestination = localhost, localhost.example.com relayhost = mynetworks = 127.0.0.0/8, [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + default_process_limit = 3 inet_interfaces = all queue_directory = /var/spool/postfix # Virtual mailbox configuration dovecot_destination_recipient_limit = 1 virtual_mailbox_base=/var/email virtual_mailbox_domains=hash:/etc/postfix/vmail_domains virtual_mailbox_maps=hash:/etc/postfix/vmail_mailbox virtual_alias_maps=hash:/etc/postfix/vmail_aliases virtual_minimum_uid=10 virtual_uid_maps=static:7788 virtual_gid_maps=static:7788 virtual_transport=dovecot # SSL configuration smtpd_tls_cert_file=/etc/letsencrypt/live/www.example.com/fullchain.pem smtpd_tls_key_file=/etc/letsencrypt/live/www.example.com/privkey.pem #smtpd_tls_CAfile=/etc/ssl/certs/ca-certificates.crt #smtp_tls_CAfile=/etc/ssl/certs/ca-certificates.crt smtpd_tls_mandatory_protocols=!SSLv2,!SSLv3 smtp_tls_mandatory_protocols=!SSLv2,!SSLv3 smtpd_tls_protocols=!SSLv2,!SSLv3 smtp_tls_protocols=!SSLv2,!SSLv3 smtp_use_tls=yes smtpd_use_tls=yes smtpd_tls_auth_only=no smtpd_tls_loglevel=1 smtpd_tls_received_header=yes smtpd_banner=$myhostname ESMTP $mail_name tls_random_source=dev:/dev/urandom smtp_tls_note_starttls_offer=yes smtpd_tls_session_cache_timeout=3600s smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache queue_directory=/var/spool/postfix # Anti-spam smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_invalid_hostname, reject_unauth_destination, check_policy_service unix:private/policy, reject_unauth_pipelining, reject_rbl_client sbl.spamhaus.org, check_policy_service unix:private/policy, permit smtpd_helo_restrictions = reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname # reject_unknown_helo_hostname smtpd_client_restrictions = reject_rbl_client dnsbl.sorbs.net, permit # Authentication settings, making use of SASL smtpd_sasl_type=dovecot smtpd_sasl_path=private/auth smtpd_sasl_auth_enable=yes broken_sasl_auth_clients=yes smtpd_sasl_security_options=noanonymous smtpd_sasl_tls_security_options=$smtpd_sasl_security_options smtpd_sasl_local_domain=$myhostname smtpd_helo_required=yes # Milters and Filters (copyright by bgm for band reasons) header_checks = pcre:/etc/postfix/header_checks.pcre policy_time_limit = 3600s policy-spf_time_limit = 3600s non_smtpd_milters = unix:/milter-greylist/milter-greylist.sock, unix:/spamass/spamass.sock, unix:/clamav/clamav-milter.ctl, unix:/var/run/opendkim/opendkim.sock #unix:/milter-greylist/milter-greylist.sock, unix:/clamav/clamav-milter.ctl, unix:/spamass/spamass.sock, unix:/var/run/opendkim/opendkim.sock smtpd_milters = unix:/milter-greylist/milter-greylist.sock, unix:/spamass/spamass.sock, unix:/clamav/clamav-milter.ctl, unix:/var/run/opendkim/opendkim.sock #unix:/milter-greylist/milter-greylist.sock, unix:/clamav/clamav-milter.ctl, unix:/spamass/spamass.sock #, unix:/var/run/opendkim/opendkim.sock milter_connect_macros = ibj _ {daemon_name} {if_name} {client_addr} #milter_connect_macros = j {daemon_name} v {if_name} _ milter_protocol = 2 milter_default_action = accept
任何人都可以提供任何见解这个问题？ 我觉得我已经解决了几个小时，我没有看到一个明显的问题。
更新：看来问题是与clamav。 如果我find解决scheme，我会在下面更新。
更新2：问题是clamav守护进程占用了太多的内存，我的系统正在杀死它。 我想我们现在可以称这个解决了。
尝试删除您的灰名单。 灰名单是为了阻止垃圾邮件发送者返回一个临时错误的做法，因为垃圾邮件发送者通常不会重试邮件，但真正的邮件服务器将会重试。
如果这不起作用，请尝试禁用所有的米尔特。 后缀日志说“milter-reject”，所以它似乎是你的一个米尔特造成的问题。