Opened 5 months ago
Last modified 4 months ago
#2671 new defect
Nginx Mail Proxy TLS Problem On Postfix
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | blocker | Milestone: | |
| Component: | nginx-core | Version: | 1.25.x |
| Keywords: | Cc: | ||
| uname -a: |
root@mail:~# uname -a
Linux mail.altunhost.net.tr 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
||
| nginx -V: |
root@mail:~# nginx -V
nginx version: nginx/1.26.1 built by gcc 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.2) built with OpenSSL 1.1.1f 31 Mar 2020 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-http_v3_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx-1.26.1/debian/debuild-base/nginx-1.26.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie' |
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Description
Hello,
I am making multiple Postfix servers addressable through a single address using an NGINX mail proxy.
However, I am experiencing SSL/TLS issues on port 587 or 465.
My configuration and the log outputs are as follows.
How can I resolve this issue?
/var/log/mail.log:
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: connect from unknown[my_proxy_server_ip]
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: smtp_stream_setup: maxtime=300 enable_deadline=0
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: name_mask: chunking
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 220 mail.mydomain.com ESMTP Postfix
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: watchdog_pat: 0x55b7b1a018f0
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: < unknown[my_proxy_server_ip]: EHLO mail.mydomain.com
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: dict_pcre_lookup: /etc/postfix/command_filter.pcre: EHLO mail.mydomain.com
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: discarding EHLO keywords: CHUNKING
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: match_list_match: unknown: no match
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: match_list_match: my_proxy_server_ip: no match
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-mail.mydomain.com
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-PIPELINING
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-SIZE 15728640
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-ETRN
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-STARTTLS
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-XCLIENT NAME ADDR PROTO HELO REVERSE_NAME PORT LOGIN DESTADDR DESTPORT
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-ENHANCEDSTATUSCODES
Jul 12 22:05:34 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250-8BITMIME
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_proxy_server_ip]: 250 DSN
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: watchdog_pat: 0x55b7b1a018f0
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: < unknown[my_proxy_server_ip]: XCLIENT ADDR=my_agent_ip NAME=[UNAVAILABLE]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: dict_pcre_lookup: /etc/postfix/command_filter.pcre: XCLIENT ADDR=my_agent_ip NAME=[UNAVAILABLE]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_authorized_xclient_hosts: unknown ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_authorized_xclient_hosts: my_agent_ip ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_list_match: unknown: no match
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_list_match: my_agent_ip: no match
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? 127.0.0.1
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? 127.0.0.1
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? [::1]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? [::1]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_home_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_home_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_agent_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_agent_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: name_mask: chunking
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 220 mail.mydomain.com ESMTP Postfix
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: watchdog_pat: 0x55b7b1a018f0
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: < unknown[my_agent_ip]: EHLO mail.mydomain.com
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: dict_pcre_lookup: /etc/postfix/command_filter.pcre: EHLO mail.mydomain.com
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: discarding EHLO keywords: CHUNKING
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_list_match: unknown: no match
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_list_match: my_agent_ip: no match
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-mail.mydomain.com
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-PIPELINING
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-SIZE 15728640
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-ETRN
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-STARTTLS
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-ENHANCEDSTATUSCODES
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250-8BITMIME
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 250 DSN
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: watchdog_pat: 0x55b7b1a018f0
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: < unknown[my_agent_ip]: AUTH PLAIN 77+9c2VuZGVybWFpbEBteWRvbWFpbi5jb23vv71hc2QxMjMzMjEtLQ==
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: dict_pcre_lookup: /etc/postfix/command_filter.pcre: AUTH PLAIN 77+9c2VuZGVybWFpbEBteWRvbWFpbi5jb23vv71hc2QxMjMzMjEtLQ==
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: > unknown[my_agent_ip]: 530 5.7.0 Must issue a STARTTLS command first
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: watchdog_pat: 0x55b7b1a018f0
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: smtp_get: EOF
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? 127.0.0.1
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? 127.0.0.1
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? [::1]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? [::1]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_proxy_server_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_home_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_home_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostname: smtpd_client_event_limit_exceptions: unknown ~? my_agent_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: match_hostaddr: smtpd_client_event_limit_exceptions: my_agent_ip ~? my_agent_ip
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: lost connection after EHLO from unknown[my_agent_ip]
Jul 12 22:05:35 mail postfix/submission/smtpd[54599]: disconnect from unknown[my_agent_ip] ehlo=2 xclient=0/1 auth=0/1 commands=2/4
nginx mail proxy configuration:
mail {
server_name mail.mydomain.com;
auth_http localhost/auth/auth.php;
pop3_capabilities "TOP" "USER" "UIDL" "PIPELINING" "SASL";
imap_capabilities "IMAP4rev1" "UIDPLUS" "IDLE" "LITERAL+" "QUOTA";
smtp_capabilities "SIZE 53477376" "8BITMIME" "ENHANCEDSTATUSCODES" "PIPELINING" "DSN";
proxy_smtp_auth on;
proxy on;
proxy_pass_error_message on;
proxy_timeout 300s;
starttls on;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers HIGH:!ADH:!MD5:@STRENGTH;
ssl_session_cache shared:TLSSL:16m;
ssl_session_timeout 10m;
ssl_certificate /etc/letsencrypt/live/mail.mydomain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/mail.mydomain.com/privkey.pem;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
server {
listen 25;
listen [::]:25;
protocol smtp;
smtp_auth none;
starttls only;
auth_http_header PORT 25;
}
server {
listen 465 ssl;
listen [::]:465 ssl;
protocol smtp;
smtp_auth login plain;
auth_http_header PORT 465;
}
server {
listen 587;
listen [::]:587;
protocol smtp;
smtp_auth login plain;
starttls only;
auth_http_header PORT 587;
}
server {
listen 110;
listen [::]:110;
protocol pop3;
starttls only;
}
server {
listen 995 ssl;
listen [::]:995 ssl;
protocol pop3;
}
server {
listen 143;
listen [::]:143;
protocol imap;
starttls only;
}
server {
listen 993 ssl;
listen [::]:993 ssl;
protocol imap;
}
}
auth.php codes:
header("HTTP/1.0 200 OK");
header("Auth-Status: OK");
header("Auth-Server: $server");
header("Auth-Port: 587");
exit();
