Почему не идет почта с postfix?

На Centos'е поднял postfix. подключаюсь по telnet к 25 порту и пытаюсь отправить письмо:
telnet 127.0.0.1 25 Trying 127.0.0.1… Connected to 127.0.0.1. Escape character is '^]'. 220 server.localdomain ESMTP Postfix ehlo mail.test 250-server.localdomain 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from: test@mail.test 250 2.1.0 Ok rcpt to: myemail@mail.ru 250 2.1.5 Ok DATA 354 End data with. hello!!!. 250 2.0.0 Ok: queued as D20FB8455CC quit 221 2.0.0 Bye Connection closed by foreign host.

Письмо не приходит, пытаюсь сделать так:
cat /var/log/maillog | grep D20FB8455CC Oct 17 16:41:06 server postfix/smtpd[6188]: D20FB8455CC: client=localhost[127.0.0.1] Oct 17 16:41:33 server postfix/cleanup[6192]: D20FB8455CC: message-id= Oct 17 16:41:33 server postfix/qmgr[6166]: D20FB8455CC: from=, size=332, nrcpt=1 (queue active)
Ага, значит оно застряло в очереди, идем туда:
postqueue -p -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- D20FB8455CC 332 Tue Oct 17 16:40:14 test@mail.test (connect to mxs.mail.ru[94.100.180.104]:25: Connection timed out) myemail@mail.ru — 1 Kbytes in 2 Requests.

Делаю postqueue -f, и еще раз смотрю логи:

Oct 17 16:41:06 server postfix/smtpd[6188]: D20FB8455CC: client=localhost[127.0.0.1] Oct 17 16:41:33 server postfix/cleanup[6192]: D20FB8455CC: message-id= Oct 17 16:41:33 server postfix/qmgr[6166]: D20FB8455CC: from=, size=332, nrcpt=1 (queue active) Oct 17 16:41:47 server postfix/smtpd[6188]: disconnect from localhost[127.0.0.1] Oct 17 16:42:03 server postfix/smtp[6193]: connect to mxs.mail.ru[94.100.180.31]:25: Connection timed out Oct 17 16:42:33 server postfix/smtp[6193]: connect to mxs.mail.ru[94.100.180.104]:25: Connection timed out Oct 17 16:42:33 server postfix/smtp[6193]: D20FB8455CC: to=, relay=none, delay=139, delays=79/0.01/60/0, dsn=4.4.1, status=deferred (connect to mxs.mail.ru[94.100.180.104]:25: Connection timed out)

а вот это выдал journalctl:
окт 17 17:20:11 SRV-T-APP-028 postfix/qmgr[6166]: D20FB8455CC: from=, size=332, nrcpt=1 (queue active) окт 17 17:20:42 SRV-T-APP-028 postfix/smtp[6290]: connect to mxs.mail.ru[94.100.180.104]:25: Connection timed out