Postfix, how to fix a problem with sending/receiving emails?

Question

Mail server

Ubuntu 16.01. Installed Iredmail, all network settings are present. There is no sending or receiving a letter, I can’t understand the reasons for the first experience. Letters for sending hang in the mailq list, cleaning does not give any results (it is cleared, the following letters also hang in the list). I suspected that this was the problem. Output from Postfix logs:
ct 27 21:02:20 mail postfix/smtpd[9064]: connect from smtp48.i.mail.ru[94.100.177.108]
Oct 27 21:02:20 mail postfix/smtpd[9064]: Anonymous TLS connection established from smtp48.i.mail.ru[94.100.177.108]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Oct 27 21:02:21 mail postfix/trivial-rewrite[9080]: warning: do not list domain mail.bk.pk.ru in BOTH virtual_mailbox_domains and relay_domains
Oct 27 21:02:21 mail postfix/smtpd[9064]: 35A981582AA9: client=smtp48.i.mail.ru[94.100.177.108]
Oct 27 21:02:22 mail postfix/cleanup[9089]: 35A981582AA9: message- id=<[email protected]>
Oct 27 21:02:22 mail postfix/qmgr[8877]: 35A981582AA9: from=, size=910, nrcpt=1 (queue active)
Oct 27 21:02: 22 mail postfix/smtp[9093]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Oct 27 21:02:22 mail postfix/smtp[9093]: 35A981582AA9: to=, relay=none, delay= 1, delays=1/0.01/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Oct 27 21:02:22 mail postfix/smtpd[ 9064]: disconnect from smtp48.i.mail.ru[94.100.177.108] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Iredapd:
2016-10-27 21:02:21 INFO [94.100.177.108] RCPT, [email protected] -> [email protected], DUNNO
2016-10-27 21:02:22 INFO [ 94.100.177.108] END-OF-MESSAGE, [email protected] -> [email protected], DUNNO
2016-10-27 21:03:46 INFO [94.100.181.128] RCPT, lada_a. [email protected] -> [email protected], DUNNO
2016-10-27 21:03:47 INFO [94.100.181.128] END-OF-MESSAGE, lada_a.auto
There is also a problem with Outlook settings, I did everything according to the manual, webmail works, but not in outlook: pop3 ssl 995port, smtp tls 25 port. Who can prompt a thread where to dig?

Answer 1

The keyword here is connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Is the postfix itself running? Is the master process listed in ps ax ?