Can't send mail - 554 Blacklisted

IMSth · March 28, 2019, 8:06pm

Hi,

I try to instal Discourse on my server as Docker container. Everything is fine until sending email on the first run.
I didn’t receive mail.

I run discourse-doctor and this is the result (I’ve changed domain to MY_DOMAIN):

DISCOURSE DOCTOR Thu Mar 28 20:21:39 CET 2019
OS: Linux MY_DOMAIN 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u2 (2018-08-13) x86_64 GNU/Linux


Found containers/app.yml

==================== YML SETTINGS ====================
DISCOURSE_HOSTNAME=forum.MY_DOMAIN
SMTP_ADDRESS=mail.MY_DOMAIN
DEVELOPER_EMAILS=REDACTED 
SMTP_PASSWORD=REDACTED 
SMTP_PORT=587
SMTP_USER_NAME=admin@MY_DOMAIN
LETSENCRYPT_ACCOUNT_EMAIL=REDACTED 

==================== DOCKER INFO ====================
DOCKER VERSION: Docker version 18.06.1-ce, build e68fc7a

DOCKER PROCESSES (docker ps -a)

CONTAINER ID        IMAGE                                    COMMAND                  CREATED             STATUS              PORTS                                                                                                                                                                                    NAMES
1f8189961b0b        local_discourse/app                      "/sbin/boot"             13 minutes ago      Up 13 minutes       80/tcp, 443/tcp                                                                                                                                                                          app
1a6cfa219f03        jrcs/letsencrypt-nginx-proxy-companion   "/bin/bash /app/entrâŚ"   4 hours ago         Up 4 hours                                                                                                                                                                                                   nginx-proxy-le
0aa8ab53cbd0        jwilder/docker-gen                       "/usr/local/bin/dockâŚ"   4 hours ago         Up 4 hours                                                                                                                                                                                                   nginx-proxy-gen
466653c3d497        nginx                                    "nginx -g 'daemon ofâŚ"   5 months ago        Up 5 hours          0.0.0.0:80->80/tcp,     0.0.0.0:443->443/tcp                                                                                                                                                 nginx-proxy
cbd9c3a891a4        analogic/poste.io                        "/init"                  5 months ago        Up 5 hours          0.0.0.0:25->25/tcp, 0.0.0.0:110->110/tcp, 80/    tcp, 443/tcp, 0.0.0.0:143->143/tcp, 0.0.0.0:587->587/tcp, 0.0.0.0:993->993/tcp, 0.0.0.0:995->995/tcp, 0.0.0.0:4190->4190/tcp, 465/tcp   poste-io


Discourse container app is running


==================== PLUGINS ====================
          - git clone https://github.com/discourse/docker_manager.git

No non-official plugins detected.

See https://github.com/discourse/discourse/blob/master/lib/plugin/metadata.rb for the official list.

========================================
Discourse version at forum.MY_DOMAIN: Discourse 2.3.0.beta6 
Discourse version at localhost: NOT FOUND
==================== DNS PROBLEM ====================
This server reports NOT FOUND, but forum.MY_DOMAIN reports Discourse 2.3.0.beta6 .
This suggests that you have a DNS problem or that an intermediate proxy is to blame.
If you are using Cloudflare, or a CDN, it may be improperly configured.


==================== MEMORY INFORMATION ====================
OS: Linux
RAM (MB): 3084

              total        used        free      shared  buff/cache   available
Mem:           3012        1729         257          84        1025        1010
Swap:          1020          19        1001

==================== DISK SPACE CHECK ====================
---------- OS Disk Space ----------
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        97G  6.4G   86G   7% /

==================== DISK INFORMATION ====================
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xe0740020

Device     Boot     Start       End   Sectors  Size Id Type
/dev/sda1  *         2048 207620095 207618048   99G 83 Linux
/dev/sda2       207622142 209713151   2091010 1021M  5 Extended
/dev/sda5       207622144 209713151   2091008 1021M 82 Linux swap / Solaris

==================== END DISK INFORMATION ====================

==================== MAIL TEST ====================
For a robust test, get an address from http://www.mail-tester.com/
Sending mail to REDACTED  . . 
Testing sending to admin@MY_DOMAIN using admin@MY_DOMAIN:PASSWORD@mail.MY_DOMAIN:587.
======================================== ERROR ========================================
                                    UNEXPECTED ERROR

554 Blacklisted; please try again later or contact administrator


====================================== SOLUTION =======================================
This is not a common error. No recommended solution exists!

Please report the exact error message above to https://meta.discourse.org/
(And a solution, if you find one!)
=======================================================================================

==================== DONE! ====================

I’ve tested manually by mail-tester.com . mail-tester.com result is: 8.9/10
I have small issue with

SpamAssassin: -1.1

Anyway I can send and receive mail on this address.
How can I resolve this problem?

pfaffman · March 28, 2019, 8:48pm

That message is coming from the SMTP server. It is not accepting mail from your Discourse server.

Whoever is in charge of mail.MY_DOMAIN is who you need to talk to. If it’s you, then you need to check your logs and google “554 blacklisted your-mail-server-software”

IMSth · March 28, 2019, 10:00pm

I use server mail as poste.io . It’s dockerized mail server and I host on the same server.

I’ve checked another server (also dockerized by poste.io ) and I’ve got 500 Unrecognized command .
Maybe someone configured Discourse with poste. io ?

Stephen · March 28, 2019, 10:06pm

Is there a reason you’re not using one on the recommended free providers?

pfaffman · March 28, 2019, 11:03pm

Maybe so. You should ask people who know about poste. io and see what they have to say.

IMSth · March 30, 2019, 6:26pm

I checked elasticmail. But still doesn’t work. I used settings from @Stephen post and set admin account as one on my gmail account.
All settings are ok, becuse when I run discource-doctor I’ve got SMTP server connection successful and Mail accepted by SMTP server.
I’ve checked inbox, spam folder - no mail.

Elasticmail says Today email sent: 0 .

Discource base is in 2.0.20190321-0122 version .

pfaffman · March 30, 2019, 6:47pm

It’s hard to explain how discourse-doctor would report that the mail sent successfully and that Elasticmail would not have the message in the logs. The only explanation I can imagine is that the ElasticMail credentials that you used are not for the same account that you’re checking the logs of. That seems wildly improbable.

IMSth · March 30, 2019, 9:36pm

I’ve checked twice. Everything is ok. It is very weird
I’ve tried different mail as administrator - still doesn’t work.

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Can't send mail - 554 Blacklisted

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