No valid SMTP Auth mechanism found for '', using default values #5219

New Issue

2026-03-07T20:17:32-06:00

GiteaMirror commented

2026-03-07 20:17:32 -06:00

Originally created by @ShootGan on GitHub (Apr 24, 2023).

Subject of the issue

I'm trying to set the SMTP Auth mechanism for not Non-SSL connection. As in the hint on the setting page I leave this empty, but in this config, I get No valid SMTP Auth mechanism found for '', using default values and then SMTP client error: internal client error: No compatible authentication mechanism was found

Deployment environment

Latest version.
K8S using this helm chart https://github.com/guerzon/vaultwarden

Running within Docker: true (Base: Debian)
Environment settings overridden: false
Uses a reverse proxy: true
IP Header check: true (X-Real-IP)
Internet access: true
Internet access via a proxy: false
DNS Check: true
Browser/Server Time Check: true
Server/NTP Time Check: true
Domain Configuration Check: true
HTTPS Check: true
Database type: SQLite
Database version: 3.39.2
Clients used:
Reverse proxy and version:
Other relevant information:

Config (Generated via diagnostics page)

Show Running Config

Environment settings which are overridden:

{
  "_duo_akey": null,
  "_enable_duo": false,
  "_enable_email_2fa": true,
  "_enable_smtp": true,
  "_enable_yubico": true,
  "_icon_service_csp": "",
  "_icon_service_url": "",
  "_ip_header_enabled": true,
  "_smtp_img_src": "cid:",
  "admin_ratelimit_max_burst": 3,
  "admin_ratelimit_seconds": 300,
  "admin_session_lifetime": 20,
  "admin_token": "***",
  "allowed_iframe_ancestors": "",
  "attachments_folder": "/data/attachments",
  "authenticator_disable_time_drift": false,
  "data_folder": "/data",
  "database_conn_init": "",
  "database_max_conns": 10,
  "database_timeout": 30,
  "database_url": "****************",
  "db_connection_retries": 15,
  "disable_2fa_remember": false,
  "disable_admin_token": false,
  "disable_icon_download": false,
  "domain": "*****://**********************************",
  "domain_origin": "*****://**********************************",
  "domain_path": "",
  "domain_set": true,
  "duo_host": null,
  "duo_ikey": null,
  "duo_skey": null,
  "email_attempts_limit": 3,
  "email_expiration_time": 600,
  "email_token_size": 6,
  "emergency_access_allowed": true,
  "emergency_notification_reminder_schedule": "0 3 * * * *",
  "emergency_request_timeout_schedule": "0 7 * * * *",
  "enable_db_wal": true,
  "event_cleanup_schedule": "0 10 0 * * *",
  "events_days_retain": null,
  "extended_logging": true,
  "helo_name": null,
  "hibp_api_key": null,
  "icon_blacklist_non_global_ips": true,
  "icon_blacklist_regex": null,
  "icon_cache_folder": "/data/icon_cache",
  "icon_cache_negttl": 259200,
  "icon_cache_ttl": 2592000,
  "icon_download_timeout": 10,
  "icon_redirect_code": 302,
  "icon_service": "internal",
  "incomplete_2fa_schedule": "30 * * * * *",
  "incomplete_2fa_time_limit": 3,
  "invitation_expiration_hours": 120,
  "invitation_org_name": "Vaultwarden",
  "invitations_allowed": false,
  "ip_header": "X-Real-IP",
  "job_poll_interval_ms": 30000,
  "log_file": null,
  "log_level": "Info",
  "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f",
  "login_ratelimit_max_burst": 10,
  "login_ratelimit_seconds": 60,
  "org_attachment_limit": null,
  "org_creation_users": "",
  "org_events_enabled": false,
  "org_groups_enabled": false,
  "password_hints_allowed": true,
  "password_iterations": 600000,
  "reload_templates": false,
  "require_device_email": false,
  "rsa_key_filename": "/data/rsa_key",
  "send_purge_schedule": "0 5 * * * *",
  "sendmail_command": null,
  "sends_allowed": true,
  "sends_folder": "/data/sends",
  "show_password_hint": false,
  "signups_allowed": true,
  "signups_domains_whitelist": "**********************",
  "signups_verify": false,
  "signups_verify_resend_limit": 6,
  "signups_verify_resend_time": 3600,
  "smtp_accept_invalid_certs": true,
  "smtp_accept_invalid_hostnames": true,
  "smtp_auth_mechanism": "",
  "smtp_debug": true,
  "smtp_embed_images": true,
  "smtp_explicit_tls": null,
  "smtp_from": "*****************************",
  "smtp_from_name": "Vaultwarden",
  "smtp_host": "*************************",
  "smtp_password": "***",
  "smtp_port": 25,
  "smtp_security": "off",
  "smtp_ssl": null,
  "smtp_timeout": 15,
  "smtp_username": "",
  "templates_folder": "/data/templates",
  "tmp_folder": "/data/tmp",
  "trash_auto_delete_days": null,
  "trash_purge_schedule": "0 5 0 * * *",
  "use_sendmail": false,
  "use_syslog": false,
  "user_attachment_limit": null,
  "web_vault_enabled": true,
  "web_vault_folder": "web-vault/",
  "websocket_address": "0.0.0.0",
  "websocket_enabled": false,
  "websocket_port": 3012,
  "yubico_client_id": null,
  "yubico_secret_key": null,
  "yubico_server": null
}

vaultwarden version: 1.28.1
Install method: As mentioned above: k8s with helm chart https://github.com/guerzon/vaultwarden.
Secure SMTP off
Port 25
Username ""
Password ""
SMTP Auth mechanism ""

Steps to reproduce

Expected behaviour

Send mail.

Actual behaviour

No valid SMTP Auth mechanism found for '', using default values -> SMTP client error: internal client error: No compatible authentication mechanism was found

Originally created by @ShootGan on GitHub (Apr 24, 2023). ### Subject of the issue I'm trying to set the SMTP Auth mechanism for not Non-SSL connection. As in the hint on the setting page I leave this empty, but in this config, I get `No valid SMTP Auth mechanism found for '', using default values` and then ` SMTP client error: internal client error: No compatible authentication mechanism was found ` ### Deployment environment Latest version. K8S using this helm chart https://github.com/guerzon/vaultwarden * Running within Docker: true (Base: Debian) * Environment settings overridden: false * Uses a reverse proxy: true * IP Header check: true (X-Real-IP) * Internet access: true * Internet access via a proxy: false * DNS Check: true * Browser/Server Time Check: true * Server/NTP Time Check: true * Domain Configuration Check: true * HTTPS Check: true * Database type: SQLite * Database version: 3.39.2 * Clients used: * Reverse proxy and version: * Other relevant information: ### Config (Generated via diagnostics page) <details><summary>Show Running Config</summary> **Environment settings which are overridden:** ```json { "_duo_akey": null, "_enable_duo": false, "_enable_email_2fa": true, "_enable_smtp": true, "_enable_yubico": true, "_icon_service_csp": "", "_icon_service_url": "", "_ip_header_enabled": true, "_smtp_img_src": "cid:", "admin_ratelimit_max_burst": 3, "admin_ratelimit_seconds": 300, "admin_session_lifetime": 20, "admin_token": "***", "allowed_iframe_ancestors": "", "attachments_folder": "/data/attachments", "authenticator_disable_time_drift": false, "data_folder": "/data", "database_conn_init": "", "database_max_conns": 10, "database_timeout": 30, "database_url": "****************", "db_connection_retries": 15, "disable_2fa_remember": false, "disable_admin_token": false, "disable_icon_download": false, "domain": "*****://**********************************", "domain_origin": "*****://**********************************", "domain_path": "", "domain_set": true, "duo_host": null, "duo_ikey": null, "duo_skey": null, "email_attempts_limit": 3, "email_expiration_time": 600, "email_token_size": 6, "emergency_access_allowed": true, "emergency_notification_reminder_schedule": "0 3 * * * *", "emergency_request_timeout_schedule": "0 7 * * * *", "enable_db_wal": true, "event_cleanup_schedule": "0 10 0 * * *", "events_days_retain": null, "extended_logging": true, "helo_name": null, "hibp_api_key": null, "icon_blacklist_non_global_ips": true, "icon_blacklist_regex": null, "icon_cache_folder": "/data/icon_cache", "icon_cache_negttl": 259200, "icon_cache_ttl": 2592000, "icon_download_timeout": 10, "icon_redirect_code": 302, "icon_service": "internal", "incomplete_2fa_schedule": "30 * * * * *", "incomplete_2fa_time_limit": 3, "invitation_expiration_hours": 120, "invitation_org_name": "Vaultwarden", "invitations_allowed": false, "ip_header": "X-Real-IP", "job_poll_interval_ms": 30000, "log_file": null, "log_level": "Info", "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f", "login_ratelimit_max_burst": 10, "login_ratelimit_seconds": 60, "org_attachment_limit": null, "org_creation_users": "", "org_events_enabled": false, "org_groups_enabled": false, "password_hints_allowed": true, "password_iterations": 600000, "reload_templates": false, "require_device_email": false, "rsa_key_filename": "/data/rsa_key", "send_purge_schedule": "0 5 * * * *", "sendmail_command": null, "sends_allowed": true, "sends_folder": "/data/sends", "show_password_hint": false, "signups_allowed": true, "signups_domains_whitelist": "**********************", "signups_verify": false, "signups_verify_resend_limit": 6, "signups_verify_resend_time": 3600, "smtp_accept_invalid_certs": true, "smtp_accept_invalid_hostnames": true, "smtp_auth_mechanism": "", "smtp_debug": true, "smtp_embed_images": true, "smtp_explicit_tls": null, "smtp_from": "*****************************", "smtp_from_name": "Vaultwarden", "smtp_host": "*************************", "smtp_password": "***", "smtp_port": 25, "smtp_security": "off", "smtp_ssl": null, "smtp_timeout": 15, "smtp_username": "", "templates_folder": "/data/templates", "tmp_folder": "/data/tmp", "trash_auto_delete_days": null, "trash_purge_schedule": "0 5 0 * * *", "use_sendmail": false, "use_syslog": false, "user_attachment_limit": null, "web_vault_enabled": true, "web_vault_folder": "web-vault/", "websocket_address": "0.0.0.0", "websocket_enabled": false, "websocket_port": 3012, "yubico_client_id": null, "yubico_secret_key": null, "yubico_server": null } ``` </details> * vaultwarden version: 1.28.1 * Install method: As mentioned above: k8s with helm chart https://github.com/guerzon/vaultwarden. Secure SMTP off Port 25 Username "" Password "" SMTP Auth mechanism "" ### Steps to reproduce ### Expected behaviour Send mail. ### Actual behaviour `No valid SMTP Auth mechanism found for '', using default values` -> ` SMTP client error: internal client error: No compatible authentication mechanism was found `

GiteaMirror closed this issue