<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <font size="-1"><font face="Courier New">Postconf:
        <a class="moz-txt-link-freetext" href="https://pastebin.com/vTVn2UMr">https://pastebin.com/vTVn2UMr</a><br>
        Doveconf: <a class="moz-txt-link-freetext" href="https://pastebin.com/nEpZrpzB">https://pastebin.com/nEpZrpzB</a><br>
        <br>
        all my logs from mail.(warn,err,info,log):
        <a class="moz-txt-link-freetext" href="https://pastebin.com/ccEVUqyd">https://pastebin.com/ccEVUqyd</a><br>
        my messges log: <a class="moz-txt-link-freetext" href="https://pastebin.com/cXaEBmcH">https://pastebin.com/cXaEBmcH</a><br>
        <br>
        I'm not sure if you meant this about dict_nis_init but I've done
        what's explained here:
<a class="moz-txt-link-freetext" href="https://unix.stackexchange.com/questions/244199/postfix-mail-logs-keep-showing-nis-domain-not-set">https://unix.stackexchange.com/questions/244199/postfix-mail-logs-keep-showing-nis-domain-not-set</a><br>
      </font></font><br>
    <div class="moz-cite-prefix">On 19/07/2020 21:05, Alexander Dalloz
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:00f0ff36-3a5e-f628-77fd-f1b0b39580ed@uni-x.org">Am
      19.07.2020 um 10:20 schrieb Nils:
      <br>
      <blockquote type="cite">
        <br>
        Here are my configurations:
        <br>
        Postfix main.cf: <a class="moz-txt-link-freetext" href="https://pastebin.com/S17jWDQd">https://pastebin.com/S17jWDQd</a>
        <br>
        Postfix master.cf: <a class="moz-txt-link-freetext" href="https://pastebin.com/W0nynZG6">https://pastebin.com/W0nynZG6</a>
        <br>
        dovecot.conf: <a class="moz-txt-link-freetext" href="https://pastebin.com/tMD90Znn">https://pastebin.com/tMD90Znn</a>
        <br>
      </blockquote>
      <br>
      Please provide your configurations processed by the tools postconf
      and doveconf.
      <br>
      <br>
      <blockquote type="cite">This is what my server logs (mail.info,
        mail.warn) tell me:
        <br>
        root@bgrsld-mail0:~# tail /var/log/mail.info
        <br>
        Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]:
        improper command pipelining after EHLO from
        unknown[192.168.2.110]: QUIT\r\n
        <br>
        Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]:
        disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
        <br>
        Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]:
        disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
        <br>
        Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]:
        warning: dict_nis_init: NIS domain name not set - NIS lookups
        disabled
        <br>
        Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]:
        connect from unknown[192.168.2.110]
        <br>
        Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]:
        improper command pipelining after EHLO from
        unknown[192.168.2.110]: QUIT\r\n
        <br>
        Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]:
        disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
        <br>
        Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics:
        max connection rate 2/60s for (submission:192.168.2.110) at Jul
        17 18:22:08
        <br>
        Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics:
        max connection count 2 for (submission:192.168.2.110) at Jul 17
        18:22:08
        <br>
        Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics:
        max cache size 1 at Jul 17 18:22:08
        <br>
        root@bgrsld-mail0:~# tail /var/log/mail.warn
        <br>
        Jul 17 18:21:50 bgrsld-mail0 postfix/postfix-script[8290]:
        warning: symlink leaves directory: /etc/postfix/./makedefs.out
        <br>
        Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]:
        warning: dict_nis_init: NIS domain name not set - NIS lookups
        disabled
        <br>
        Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]:
        warning: dict_nis_init: NIS domain name not set - NIS lookups
        disabled
        <br>
        Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]:
        warning: dict_nis_init: NIS domain name not set - NIS lookups
        disabled
        <br>
      </blockquote>
      <br>
      There is no SMTP AUTH in the log. Provide the logs from a
      connection where your MUA tries to auth.
      <br>
      <br>
      And fix the dict_nis_init thing. See alias_maps.
      <br>
      <br>
      Alexander
      <br>
    </blockquote>
    <br>
  </body>
</html>