I need some help with my Dovecot and Postfix configs - I'm unable to log in on my mail server

[Alexander Dalloz]

Am 19.07.2020 um 10:20 schrieb Nils:
> 
> Here are my configurations:
> Postfix main.cf: https://pastebin.com/S17jWDQd
> Postfix master.cf: https://pastebin.com/W0nynZG6
> dovecot.conf: https://pastebin.com/tMD90Znn

Please provide your configurations processed by the tools postconf and 
doveconf.

> This is what my server logs (mail.info, mail.warn) tell me:
> root at bgrsld-mail0:~# tail /var/log/mail.info
> 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
> Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]: disconnect 
> from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
> Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]: disconnect 
> from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
> Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: warning: 
> dict_nis_init: NIS domain name not set - NIS lookups disabled
> Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: connect 
> from unknown[192.168.2.110]
> 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
> Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: disconnect 
> from unknown[192.168.2.110] ehlo=1 quit=1 commands=2
> 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
> 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
> Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics: max cache 
> size 1 at Jul 17 18:22:08
> root at bgrsld-mail0:~# tail /var/log/mail.warn
> Jul 17 18:21:50 bgrsld-mail0 postfix/postfix-script[8290]: warning: 
> symlink leaves directory: /etc/postfix/./makedefs.out
> Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]: warning: 
> dict_nis_init: NIS domain name not set - NIS lookups disabled
> Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]: warning: 
> dict_nis_init: NIS domain name not set - NIS lookups disabled
> Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: warning: 
> dict_nis_init: NIS domain name not set - NIS lookups disabled

There is no SMTP AUTH in the log. Provide the logs from a connection 
where your MUA tries to auth.

And fix the dict_nis_init thing. See alias_maps.

Alexander