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Old 09-04-2017, 01:13 AM   #1
Dante K
LQ Newbie
 
Registered: Sep 2017
Posts: 1

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Question Postfix multiple instance only default instance work


Hello all,
Let me explain what I'm doing and what I want to reach from this postfix multiple instances

Quote:
I have domain for example "example1.com" and "mail.example1.com" for mail server and has proper DNS MX records and everything is fine, Now I have another domain "example2.com" and "mail.example2.com" for mail server, Each time I send mail from server the mail went to clients SPAM folder and the smtp.mailfrom shows "mail.example1.com"& IP: 1.1.1.1 (for example) at the end I found the newer domain in websites mails blacklist databases, So I searched for a solution but at the end it appears that I must use 2 myhostname by create additional postfix instance to accomplish this and for complete isolation.


I created another instance called "postfix-secondary" via this command:

Code:
    postmulti -e init
Then created it by this command:

Code:
    postmulti -I postfix-secondary -e create
After that mad it run via this:

Code:
    postmulti -i postfix-secondary -p start
The problem now is the emails still forced to go through "mail.example1.com" even with disabled the default mail server and I see it kept gathered in the default queue

I will list the configs now

(example1.com) /etc/postfix/main.cf:

Code:

    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
    
    smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination check_sender_access hash:/etc/postfix/mail_blacklist
    myhostname = mail.example1.com
    alias_maps = hash:/etc/aliases
    alias_database = hash:/etc/aliases
    myorigin = /etc/mailname
    mydestination = mail.example1.com, example1.com, localhost.example1.com, localhost
    relayhost = 
    mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
    mailbox_size_limit = 0
    recipient_delimiter = +
    inet_interfaces = 1.1.1.1
    inet_protocols = ipv4
    
    smtpd_recipient_restrictions = reject_invalid_hostname,
            reject_unknown_recipient_domain,
            reject_unauth_destination,
    		reject_invalid_hostname,
            reject_non_fqdn_hostname,
            reject_non_fqdn_sender,
    		reject_non_fqdn_recipient,
    		reject_unknown_sender_domain,
    		reject_unknown_recipient_domain,
            reject_rbl_client sbl.spamhaus.org,
    		reject_rbl_client cbl.abuseat.org,
    		reject_rbl_client dul.dnsbl.sorbs.net,
            permit
    
    smtpd_helo_restrictions = reject_invalid_helo_hostname,
            reject_non_fqdn_helo_hostname,
    		reject_non_fqdn_hostname,
    		reject_invalid_hostname,
            reject_unknown_helo_hostname
    
    
    default_process_limit = 100
    smtpd_client_connection_count_limit = 10
    smtpd_client_connection_rate_limit = 30
    queue_minfree = 20971520
    header_size_limit = 51200
    message_size_limit = 10485760
    smtpd_recipient_limit = 100
    disable_vrfy_command= yes
    smtpd_helo_required = yes
    smtpd_delay_reject = yes
    smtpd_error_sleep_time = 1s
    smtpd_soft_error_limit = 10
    smtpd_hard_error_limit = 20
(example1.com) /etc/postfix/master.cf (default)

Code:
    smtp      inet  n       -       -       -       -       smtpd
(example2.com) /etc/postfix-secondary/main.cf

Code:
    unknown_local_recipient_reject_code = 550
    mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
    debugger_command =
    	 PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
    	 ddd $daemon_directory/$process_name $process_id & sleep 5
    
    readme_directory = no
    inet_protocols = ipv4
    #master_service_disable = inet
    authorized_submit_users = 
    queue_directory = /var/spool/postfix-secondary
    multi_instance_name = postfix-secondary
    
    myhostname = mail.example2.com
    inet_interfaces = 2.2.2.2
    multi_instance_enable = yes
    mydestination = mail.example2.com, example2.com, localhost.example2.com, localhost
    
    
    
    smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination check_sender_access hash:/etc/postfix/mail_blacklist
    alias_maps = hash:/etc/aliases
    alias_database = hash:/etc/aliases
    myorigin = /etc/mailname
    relayhost = 
    mailbox_size_limit = 0
    recipient_delimiter = +
    #smtp_bind_address = 0.0.0.0
    
    
    smtpd_recipient_restrictions = reject_invalid_hostname,
            reject_unknown_recipient_domain,
            reject_unauth_destination,
    		reject_invalid_hostname,
            reject_non_fqdn_hostname,
            reject_non_fqdn_sender,
    		reject_non_fqdn_recipient,
    		reject_unknown_sender_domain,
    		reject_unknown_recipient_domain,
            reject_rbl_client sbl.spamhaus.org,
    		reject_rbl_client cbl.abuseat.org,
    		reject_rbl_client dul.dnsbl.sorbs.net,
            permit
    
    smtpd_helo_restrictions = reject_invalid_helo_hostname,
            reject_non_fqdn_helo_hostname,
    		reject_non_fqdn_hostname,
    		reject_invalid_hostname,
            reject_unknown_helo_hostname
    
    
    default_process_limit = 100
    smtpd_client_connection_count_limit = 10
    smtpd_client_connection_rate_limit = 30
    queue_minfree = 20971520
    header_size_limit = 51200
    message_size_limit = 10485760
    smtpd_recipient_limit = 100
    disable_vrfy_command= yes
    smtpd_helo_required = yes
    smtpd_delay_reject = yes
    smtpd_error_sleep_time = 1s
    smtpd_soft_error_limit = 10
    smtpd_hard_error_limit = 20
    
    
    
    append_dot_mydomain = no
    
    
    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
(example2.com) /etc/postfix-secondary/master.cf (default)

Code:
    smtp      inet  n       -       -       -       -       smtpd
The DNS records for (example1.com) is fine and same as DNS for (example2.com) execpt different domain & IP:

Code:
    example2.com.	IN	MX	10 mail.example2.com.
    mail.example2.com.          IN      A  2.2.2.2
    example2.      IN TXT     "v=spf1 mx ip4:2.2.2.2/32 ~all"
    _dmarc.example2.com.	IN	TXT	"v=DMARC1; pct=100; p=none; adkim=r; aspf=r"
I really need to hide the first domain (example1.com) from the mails info of (example2.com) mails. I need complete isolation. So if anyone try to know the sender he only gets (mail.example2.com), It is been 6 days since I encounter this issue and I can't progress because of this headache.

Thanks in advance

Last edited by Dante K; 09-04-2017 at 01:15 AM.
 
  


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