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Topic: warning: problem talking to server 127.0.0.1:7777: Success

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3 MARIADB edition
- Deployed with iRedMail Easy or the downloadable installer? downloadable
- Linux/BSD distribution name and version:  CentOS 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello

I cannot receive mail from some companies, one being Steam.

I am getting this error. Warning: problem talking to server 127.0.0.1:7777: Success


2020-10-19T20:15:34.648+01:00    Oct 19 19:15:34 ip-172-31-32-243 postfix/smtpd[17449]: connect from smtp-03-tuk1.steampowered.com[208.64.202.39]

2020-10-19T20:15:35.648+01:00    Oct 19 19:15:34 ip-172-31-32-243 postfix/smtpd[17449]: Anonymous TLS connection established from smtp-03-tuk1.steampowered.com[208.64.202.39]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)

2020-10-19T20:15:35.648+01:00    Oct 19 19:15:35 ip-172-31-32-243 postfix/smtpd[17449]: 4CFRKz1lTFz149Tr: client=smtp-03-tuk1.steampowered.com[208.64.202.39]

2020-10-19T20:15:35.648+01:00    Oct 19 19:15:35 ip-172-31-32-243 postfix/cleanup[17458]: 4CFRKz1lTFz149Tr: message-id=<E1kUad3-0004hB-R9@smtp-03-tuk1.steampowered.com>

2020-10-19T20:15:36.649+01:00    Oct 19 19:15:36 ip-172-31-32-243 postfix/smtpd[17449]: warning: problem talking to server 127.0.0.1:7777: Success

2020-10-19T20:15:36.649+01:00    Oct 19 19:15:36 ip-172-31-32-243 postfix/smtpd[17449]: 4CFRKz1lTFz149Tr: reject: END-OF-MESSAGE from smtp-03-tuk1.steampowered.com[208.64.202.39]: 451 4.3.5 Server configuration problem; from=<noreply@steampowered.com> to=<xxxx@xxxxxx.co.uk> proto=ESMTP helo=<smtp-03-tuk1.steampowered.com>

2020-10-19T20:15:36.649+01:00    Oct 19 19:15:36 ip-172-31-32-243 postfix/smtpd[17449]: disconnect from smtp-03-tuk1.steampowered.com[208.64.202.39]

2020-10-19T20:16:35.666+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/postscreen[17446]: CONNECT from [103.133.105.65]:9379 to [172.31.xxx.xxx]:25

2020-10-19T20:16:35.666+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/dnsblog[17447]: addr 103.133.105.65 listed by domain zen.spamhaus.org as 127.0.0.3

2020-10-19T20:16:35.667+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/dnsblog[17447]: addr 103.133.105.65 listed by domain zen.spamhaus.org as 127.0.0.4

2020-10-19T20:16:35.667+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/postscreen[17446]: CONNECT from [103.133.105.65]:9409 to [172.31.xxx.xxx]:25

2020-10-19T20:16:35.667+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/postscreen[17446]: PREGREET 11 after 0.19 from [103.133.105.65]:9379: EHLO User\r\n

2020-10-19T20:16:35.667+01:00    Oct 19 19:16:35 ip-172-31-32-243 postfix/postscreen[17446]: DISCONNECT [103.133.105.65]:9379

2020-10-19T20:16:41.669+01:00    Oct 19 19:16:41 ip-172-31-32-243 postfix/postscreen[17446]: DNSBL rank 3 for [103.133.105.65]:9409

2020-10-19T20:16:41.669+01:00    Oct 19 19:16:41 ip-172-31-32-243 postfix/postscreen[17446]: DISCONNECT [103.133.105.65]:9409

2020-10-19T20:18:27.699+01:00    Oct 19 19:18:27 ip-172-31-32-243 postfix/postscreen[17557]: CONNECT from [208.64.202.53]:54251 to [172.31.xxx.xxx]:25

2020-10-19T20:18:27.699+01:00    Oct 19 19:18:27 ip-172-31-32-243 postfix/postscreen[17557]: PASS OLD [208.64.202.53]:54251

2020-10-19T20:18:27.699+01:00    Oct 19 19:18:27 ip-172-31-32-243 postfix/smtpd[17560]: connect from smtp-53.steampowered.com[208.64.202.53]

2020-10-19T20:18:28.700+01:00    Oct 19 19:18:27 ip-172-31-32-243 postfix/postscreen[17557]: CONNECT from [54.240.30.72]:49424 to [172.31.xxx.xxx]:25

2020-10-19T20:18:28.700+01:00    Oct 19 19:18:28 ip-172-31-32-243 postfix/smtpd[17560]: Anonymous TLS connection established from smtp-53.steampowered.com[208.64.202.53]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)

2020-10-19T20:18:28.700+01:00    Oct 19 19:18:28 ip-172-31-32-243 postfix/smtpd[17560]: 4CFRPJ3FTvz149Tv: client=smtp-53.steampowered.com[208.64.202.53]

2020-10-19T20:18:28.700+01:00    Oct 19 19:18:28 ip-172-31-32-243 postfix/cleanup[17566]: 4CFRPJ3FTvz149Tv: message-id=<E1kUad3-0004hB-R9@smtp-03-tuk1.steampowered.com>

2020-10-19T20:18:29.701+01:00    Oct 19 19:18:29 ip-172-31-32-243 postfix/smtpd[17560]: warning: problem talking to server 127.0.0.1:7777: Success

2020-10-19T20:18:29.701+01:00    Oct 19 19:18:29 ip-172-31-32-243 postfix/smtpd[17560]: 4CFRPJ3FTvz149Tv: reject: END-OF-MESSAGE from smtp-53.steampowered.com[208.64.202.53]: 451 4.3.5 Server configuration problem; from=<noreply@steampowered.com> to=<xxxx@xxxxxx.co.uk> proto=ESMTP helo=<smtp-53.steampowered.com>

2020-10-19T20:18:30.702+01:00    Oct 19 19:18:29 ip-172-31-32-243 postfix/smtpd[17560]: disconnect from smtp-53.steampowered.com[208.64.202.53]

2020-10-19T20:18:33.703+01:00    Oct 19 19:18:33 ip-172-31-32-243 postfix/postscreen[17557]: PASS OLD [54.240.30.72]:49424

2020-10-19T20:18:33.703+01:00    Oct 19 19:18:33 ip-172-31-32-243 postfix/smtpd[17560]: connect from a30-72.smtp-out.amazonses.com[54.240.30.72]

2020-10-19T20:18:33.703+01:00    Oct 19 19:18:33 ip-172-31-32-243 postfix/smtpd[17560]: 4CFRPP2YzPz149Tr: client=a30-72.smtp-out.amazonses.com[54.240.30.72]

2020-10-19T20:18:33.703+01:00    Oct 19 19:18:33 ip-172-31-32-243 postfix/cleanup[17566]: 4CFRPP2YzPz149Tr: message-id=<010001753f88aac6-01e66218-2bed-48e4-adde-1217805284e8-000000@email.amazonses.com>

2020-10-19T20:18:34.704+01:00    Oct 19 19:18:34 ip-172-31-32-243 postfix/smtpd[17560]: warning: problem talking to server 127.0.0.1:7777: Success

2020-10-19T20:18:34.704+01:00    Oct 19 19:18:34 ip-172-31-32-243 postfix/smtpd[17560]: 4CFRPP2YzPz149Tr: reject: END-OF-MESSAGE from a30-72.smtp-out.amazonses.com[54.240.30.72]: 451 4.3.5 Server configuration problem; from=<010001753f88aac6-01e66218-2bed-48e4-adde-1217805284e8-000000@amazonses.com> to=<xxxx@xxxxxx.co.uk> proto=ESMTP helo=<a30-72.smtp-out.amazonses.com>

2020-10-19T20:18:59.712+01:00    Oct 19 19:18:59 ip-172-31-32-243 postfix/smtpd[17560]: disconnect from a30-72.smtp-out.amazonses.com[54.240.30.72]

2

Re: warning: problem talking to server 127.0.0.1:7777: Success

Is "iredapd" service running? Any error in /var/log/iredapd/iredapd.log?

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3

Re: warning: problem talking to server 127.0.0.1:7777: Success

Yes iredapd is running.

sudo service iredapd status
Redirecting to /bin/systemctl status iredapd.service
● iredapd.service - iRedAPD (A simple posfix policy server)
   Loaded: loaded (/usr/lib/systemd/system/iredapd.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2020-08-11 23:04:18 UTC; 2 months 8 days ago
  Process: 1052 ExecStart=/usr/bin/python3 /opt/iredapd/iredapd.py (code=exited, status=0/SUCCESS)
 Main PID: 1706 (python3)
   CGroup: /system.slice/iredapd.service
           └─1706 /usr/bin/python3 /opt/iredapd/iredapd.py

Log lines from /var/log/iredapd/iredapd.log

Oct 20 20:01:57 ip-172-31-32-243 journal: iredapd [208.64.202.43] Client network is whitelisted: cidr=208.64.202.32/27
Oct 20 20:01:57 ip-172-31-32-243 journal: iredapd Whitelisted: wblist=(1, 2, 'W')
Oct 20 20:01:57 ip-172-31-32-243 journal: iredapd [208.64.202.43] RCPT, noreply@steampowered.com -> xxx@xxx.co.uk, OK [sasl_username=, sender=noreply@steampowered.com, client_name=smtp-04-tuk1.steampowered.com, reverse_client_name=smtp-04-tuk1.steampowered.com, helo=smtp-04-tuk1.steampowered.com, encryption_p$
Oct 20 20:02:08 ip-172-31-32-243 journal: iredapd [208.64.202.46] Client network is whitelisted: cidr=208.64.202.32/27
Oct 20 20:02:08 ip-172-31-32-243 journal: iredapd Whitelisted: wblist=(1, 2, 'W')
Oct 20 20:02:08 ip-172-31-32-243 journal: iredapd [208.64.202.46] RCPT, noreply@steampowered.com -> xxx@xxx.co.uk, OK [sasl_username=, sender=noreply@steampowered.com, client_name=smtp-46.steampowered.com, reverse_client_name=smtp-46.steampowered.com, helo=smtp-46.steampowered.com, encryption_protocol=TLSv1.2$

Oct 20 20:02:59 ip-172-31-32-243 journal: iredapd [208.64.202.43] Client network is whitelisted: cidr=208.64.202.32/27
Oct 20 20:02:59 ip-172-31-32-243 journal: iredapd Whitelisted: wblist=(1, 2, 'W')
Oct 20 20:02:59 ip-172-31-32-243 journal: iredapd [208.64.202.43] RCPT, noreply@steampowered.com -> xxx@xxx.co.uk, OK [sasl_username=, sender=noreply@steampowered.com, client_name=smtp-04-tuk1.steampowered.com, reverse_client_name=smtp-04-tuk1.steampowered.com, helo=smtp-04-tuk1.steampowered.com, encryption_p$

4

Re: warning: problem talking to server 127.0.0.1:7777: Success

1: Is your server very busy? A lot in/out emails?
2: Any related error/warning log in Postfix log file?
3: Any error in iRedAPD log file (/var/log/iredapd/iredapd.log) RIGHT AFTER restarted iredapd service?

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5

Re: warning: problem talking to server 127.0.0.1:7777: Success

I rebooted the server and I can now receive emails from Steam.
Very odd I will check out the logs some more.

Thank you for your time.