Service de notification par e-mail d'Aliyun inutilisable

J’essaie de configurer le service de notification par e-mail d’Aliyun pour Discourse récemment, mais je rencontre constamment des blocages et le service de notification par e-mail ne fonctionne pas correctement. Pouvez-vous identifier le problème ?

==================== DOCKER INFO ====================
DOCKER VERSION: Docker version 29.2.1, build a5c7197

DOCKER PROCESSES (docker ps -a)

CONTAINER ID   IMAGE                 COMMAND        CREATED         STATUS         PORTS                                                                          NAMES
412d2aebeefc   local_discourse/app   "/sbin/boot"   4 seconds ago   Up 3 seconds   0.0.0.0:80->80/tcp, [::]:80->80/tcp, 0.0.0.0:443->443/tcp, [::]:443->443/tcp   app

412d2aebeefc   local_discourse/app   "/sbin/boot"   4 seconds ago   Up 3 seconds   0.0.0.0:80->80/tcp, [::]:80->80/tcp, 0.0.0.0:443->443/tcp, [::]:443->443/tcp   app

Discourse container app is running


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

WARNING:
You have what appear to be non-official plugins.
If you are having trouble, you should disable them and try rebuilding again.

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

========================================
Discourse version at communitytest.akarinliu.com: NOT FOUND
Discourse version at localhost: NOT FOUND


==================== MEMORY INFORMATION ====================
RAM (MB): 2069

               total        used        free      shared  buff/cache   available
Mem:            1973         479        1191          18         492        1493
Swap:           2047          68        1979

==================== DISK SPACE CHECK ====================
---------- OS Disk Space ----------
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        30G  8.8G   20G  32% /

==================== DISK INFORMATION ====================
Disk /dev/sda: 30 GiB, 32212254720 bytes, 62914560 sectors
Disk model: QEMU HARDDISK
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: 0x86a4d272

Device     Boot Start      End  Sectors Size Id Type
/dev/sda1  *     2048 62914526 62912479  30G 83 Linux

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

==================== MAIL TEST ====================
For a robust test, get an address from http://www.mail-tester.com/
Or just send a test message to yourself.
Email address for mail test? ('n' to skip) [akarinliu@outlook.com]:
Sending mail to akarinliu@outlook.com. . .
Testing sending to akarinliu@outlook.com using smtpdm.aliyun.com:465, username:hi@notify.akarinliu.com with plain auth.
==================================== ERROR ====================================
UNKNOWN ERROR!
Net::ReadTimeout: Net::ReadTimeout with #<TCPSocket:(closed)>
=================================== 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!)
================================================================================
Replacing: SMTP_PASSWORD
Replacing: LETSENCRYPT_ACCOUNT_EMAIL
Replacing: DEVELOPER_EMAILS
Replacing: DISCOURSE_DB_PASSWORD
Replacing: Sending mail to

==================== DONE! ====================
Would you like to serve a publicly available version of this file? (Y/n) n
'Publicly available log not generated.

You can examine the output of this script with
LESS=-Ri less /tmp/discourse-debug.txt

BUT FIRST, make sure that you know the first three commands below!!!

Commands to know when viewing the file with the above command (called 'less'):
q              -- quit
/error<ENTER>  -- search for the word 'error'
n              -- search for the next occurrence
g              -- go to the beginning of the file
f              -- go forward a page
b              -- go back a page
G              -- go to the end of the file

Êtes-vous capable de faire un telnet sur le serveur smtp ?

telnet smtpadm.aliyun.com 465