[SOLVED] SMTP Error

Hello dear! I'm planning to deploy appwrite for migration from firebase. I'm deploying appwrite in docker swarm. It seems to be starting, but I ran into a strange SMTP problem. Cant send invite..

appwrite-worker-mails log: [Worker] Worker 0 is ready! Worker mails started [Job] Received Job (657ee8a6430838.07524580). [Job] (657ee8a6430838.07524580) failed to run. [Job] (657ee8a6430838.07524580) Error sending mail: SMTP Error: Could not authenticate. [Error] Type: Exception [Error] Message: Error sending mail: SMTP Error: Could not authenticate. [Error] File: /usr/src/code/src/Appwrite/Platform/Workers/Mails.php [Error] Line: 96

I tried different SMPT configurations in .env, different servers, but the answer is always the same. I can't connect to the servers. Version Appwrite 1.4.13 .env: _APP_ENV=production _APP_LOGGING_CONFIG= _APP_LOGGING_PROVIDER= _APP_OPENSSL_KEY_V1=mypassword _APP_REDIS_HOST=appwrite_redis _APP_REDIS_PASS= _APP_REDIS_PORT=6379 _APP_REDIS_USER= _APP_SMTP_HOST=mail.mySMTPserver _APP_SMTP_PASSWORD=myPasswordForSenderEmail _APP_SMTP_PORT=25 _APP_SMTP_SECURE= _APP_SMTP_USERNAME=SenderEmail@mySMTPserver _APP_SYSTEM_EMAIL_ADDRESS=SenderEmail@mySMTPserver _APP_SYSTEM_EMAIL_NAME=SenderEmail@mySMTPserver _APP_SYSTEM_SECURITY_EMAIL_ADDRESS=SenderEmail@mySMTPserver _APP_WORKER_PER_CORE=6

TL;DR

The user was experiencing an SMTP error while trying to send invites in their deployed Appwrite app. They tried different SMTP configurations but couldn't connect to the servers. The specific error was "SMTP Error: Could not authenticate." The user found a problem in the SMTP server configuration and fixed it. The solution was to check the SMTP server configs with email clients and double-check the credentials. After making the necessary corrections, the issue was resolved.

telnet on 25, 465, 587 ports connected