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Install Mail Server on Centminmod

Discussion in 'Add Ons' started by brijendrasial, Aug 16, 2019.

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  1. Mar 27, 2020 #101
    eva2000

    eva2000 Administrator Staff Member

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    One of downsides of hosting own email is with anti-virus/malware scanning of emails etc, you can potentially use a lot more memory even up to 4-8GB more memory. That's why I don't host my own email anyway and use 3rd party services like Gmail/Gsuite and Zoho :)
     
  2. Mar 27, 2020 #102
    gamal

    gamal Member

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    this is completly true, my website went down like 6 times in the past 24 hours, i wish there was other solutions cause i need to send 10000's of mails for my website newsletter, which is really costly through zoho or Gsuite
     
  3. Mar 27, 2020 #103
    eva2000

    eva2000 Administrator Staff Member

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    You're using the wrong tool. Transactional mass emails should be sent via transactional email providers like Amazon SES Amazon AWS - Amazon AWS SES SMTP Transactional Email Info
     
  4. Apr 1, 2020 #104
    gamal

    gamal Member

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  5. Apr 20, 2020 #105
    adzkii

    adzkii Member

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    Code:
    SMTP Error (535): Authentication failed.
    Code:
    Apr 20 00:00:34 vultr postfix/submission/smtpd[1701]: warning: cannot get RSA certificate from file /root/.acme.sh/mail.domain1.com/fullchain.cer: disabling TLS support
Apr 20 00:00:34 vultr postfix/submission/smtpd[1701]: warning: TLS library problem: 1701:error:02001002:system library:fopen:No such file or directory:bss_file.c:402:fopen('/root/.acme.sh/mail.domain1.com/fullchain.cer','r'):
Apr 20 00:00:34 vultr postfix/submission/smtpd[1701]: warning: TLS library problem: 1701:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:404:
Apr 20 00:00:34 vultr postfix/submission/smtpd[1701]: warning: TLS library problem: 1701:error:140DC002:SSL routines:SSL_CTX_use_certificate_chain_file:system lib:ssl_rsa.c:701:
Apr 20 00:01:15 vultr postfix/smtpd[2047]: warning: cannot get RSA certificate from file /root/.acme.sh/mail.domain1.com/fullchain.cer: disabling TLS support
    getting the same error.

    and when uninstaling everything using option 7, i get that error
    Code:
    Job for postfix.service failed because the control process exited with error code. See "systemctl status postfix.service" and "journalctl -xe" for details
     
  6. Apr 20, 2020 #106
    brijendrasial

    brijendrasial Active Member

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    Your ssl ccertificate didnt get generated. Check in the folder and also see if your hostnname is pointed to the server.
     
  7. Apr 20, 2020 #107
    brijendrasial

    brijendrasial Active Member

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    and when uninstaling everything using option 7, i get that error
    Code:
    Job for postfix.service failed because the control process exited with error code. See "systemctl status postfix.service" and "journalctl -xe" for details
    [/QUOTE]

    post

    Code:
    systemctl status postfix.service
    also post

    Code:
    postconf -f
     
    Last edited: Apr 20, 2020
  8. May 22, 2020 #108
    marcostutu

    marcostutu New Member

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    In my VPS I am having the following problem, Roundcube works well, however my IPS application is unable to configure SMTP.

    Code:
    A test email could not be sent. Check the settings entered are correct or[ contact your hosting or SMTP provider for more information.

535 5.7.8 Error: authentication failed: Invalid authentication mechanism

    Code:
    [17:38][root@vmi390198.contaboserver.net tools]# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2020-05-21 17:09:16 UTC; 35min ago
  Process: 30066 ExecStop=/usr/sbin/postfix stop (code=exited, status=1/FAILURE)
  Process: 30377 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS)
  Process: 30372 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
  Process: 30367 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)
 Main PID: 30448 (master)
   CGroup: /system.slice/postfix.service
           ├─30448 /usr/libexec/postfix/master -w
           ├─30449 pickup -l -t unix -u
           ├─30450 qmgr -l -t unix -u
           ├─30558 tlsmgr -l -t unix -u
           ├─32957 smtpd -n submission -t inet -u -c -o stress= -o syslog_name=postfix/submission -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_aut...
           ├─32959 anvil -l -t unix -u
           ├─33256 trivial-rewrite -n rewrite -t unix -u
           └─33257 proxymap -t unix -u

May 21 17:42:31 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: connect from unknown[95.111.245.79]
May 21 17:42:31 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: warning: unknown[95.111.245.79]: SASL LOGIN authentication failed: Invalid authentication mechanism
May 21 17:42:31 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: disconnect from unknown[95.111.245.79]
May 21 17:42:51 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: connect from unknown[183.89.59.66]
May 21 17:42:55 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: warning: unknown[183.89.59.66]: SASL PLAIN authentication failed:
May 21 17:42:55 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: disconnect from unknown[183.89.59.66]
May 21 17:44:11 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: connect from unknown[95.111.245.79]
May 21 17:44:11 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: warning: unknown[95.111.245.79]: SASL LOGIN authentication failed: Invalid authentication mechanism
May 21 17:44:11 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: NOQUEUE: reject: RCPT from unknown[95.111.245.79]: 450 4.4.4 <binha.maria36@hotmail.com>: Recipient address rejected: Un...server.net>
May 21 17:44:11 vmi390198.contaboserver.net postfix/submission/smtpd[32957]: disconnect from unknown[95.111.245.79]
     
  9. May 25, 2020 #109
    brijendrasial

    brijendrasial Active Member

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    Well can you try this
    Code:
    vi /etc/dovecot/conf.d/10-auth.conf
    Find
    Code:
    auth_mechanisms = plain
    Replace With
    Code:
    auth_mechanisms = plain login
    Restart postfix and dovecot
    Code:
    systemctl restart postfix
systemctl restart dovecot
    Let me know if this helps.
     
  10. May 25, 2020 #110
    marcostutu

    marcostutu New Member

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    He continued with the problem.

    Code:
    A test email could not be sent. Check the settings entered are correct or contact your hosting or SMTP provider for more information.

535 5.7.8 Error: authentication failed: Invalid authentication mechanism
     
  11. May 29, 2020 #111
    brijendrasial

    brijendrasial Active Member

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    Please use port 465 for outgoing and incomming 993 and choose as ssl/tls and check if its working or not.
     
  12. Jun 1, 2020 #112
    brijendrasial

    brijendrasial Active Member

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    Update: Added trusted ssl certificate in dovecot.
     
  13. Jun 1, 2020 #113
    Dnyan

    Dnyan Member

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    Posting a Tutorial on how to install your addon will help many in understanding, what is what and how to use it.

    You can atleast post command lines like how they are posted in this document
    Addon phpmyadmin.sh - CentminMod.com LEMP Nginx web stack for CentOS

    Considering every user here is having same caliper like you may not be a true thing.
    There may be peoples having no knowledge of programming and wish to do it, some might be having moderate and some might be far beyond you.
    Its my request to you, kindly do consider posting steps for installation of every feature and some briefer detailing about it.

    It will not only help peoples from all level but also it will make you stand respectfully in their eyes for such a great help.

    Your addons are good and i am using them, off course you only told me in past on how to install.
    Now doing a update to addon will become a tedious task due to no understanding of it.

    Thank You
     
  14. Jun 1, 2020 #114
    brijendrasial

    brijendrasial Active Member

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    Whenever you download new project file from github and run it will ask you what new have been added and your mail server is lacking. You will be prompted for that and if you want you can install it.

    I will try to make but I dont think will spend that much time in that
     
  15. Jul 22, 2020 #115
    yunos

    yunos Member

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    @brijendra thanks for the addon btw, great tool.
    Now, where would i find smtp authentication credentials? i finished installing discourse but in config they require smtp password, username and port. Where would i find the smtp config for that?
     
  16. Jul 22, 2020 #116
    brijendrasial

    brijendrasial Active Member

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    The details hostname, email and password you entered while installing are the credentials
     
  17. Jul 22, 2020 #117
    yunos

    yunos Member

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    DISCOURSE_SMTP_ADDRESS:
    DISCOURSE_SMTP_PORT: 587
    DISCOURSE_SMTP_USER_NAME:
    DISCOURSE_SMTP_PASSWORD:

    then what would smtp address be?
     
  18. Jul 22, 2020 #118
    brijendrasial

    brijendrasial Active Member

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    DISCOURSE_SMTP_ADDRESS: hostname
    DISCOURSE_SMTP_USER_NAME:email
    DISCOURSE_SMTP_PASSWORD: password
     
  19. Jul 22, 2020 #119
    yunos

    yunos Member

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    thank you
     
  20. Jul 22, 2020 #120
    yunos

    yunos Member

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    i assume when setting up your mail server you need to use linux hostname right?
    would it be possible if i want to create a subdomain say
    smtp.domain.com
    and use that as mail server hostname, would that work?
    wouldnt be good idea if i changed my linux hostname to smtp.domain.com
     
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