login auth not properly verify?

[typenoob]

[rnwood]

Please can you grab the session log from SMTP4dev UI.

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From: typenoob @.> Sent: Thursday, June 6, 2024 3:53:24 AM To: rnwood/smtp4dev @.> Cc: Subscribed @.***> Subject: [rnwood/smtp4dev] login auth not properly verify? (Issue #1515)

image.png (view on web)https://github.com/rnwood/smtp4dev/assets/61347081/2bd8bcda-c8d1-4b27-a50e-1d22ba7b2c2d image.png (view on web)https://github.com/rnwood/smtp4dev/assets/61347081/50c3a59b-6cc2-4a27-bcce-4ec1ed8a4b89 image.png (view on web)https://github.com/rnwood/smtp4dev/assets/61347081/b57967fe-1568-4949-b255-fe88ff2803bd

image.png (view on web)https://github.com/rnwood/smtp4dev/assets/61347081/fa1e026a-c997-44fb-b4d3-8dcb4aefb692

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[danrollason-dd]

Hi. Just encountered the same issue sending an email from a go app. Our session log is

220 localhost smtp4dev ready
EHLO localhost
250-Nice to meet you.
250-8BITMIME
250-SIZE
250-SMTPUTF8
250-AUTH=CRAM-MD5 PLAIN LOGIN
250 AUTH CRAM-MD5 PLAIN LOGIN
AUTH PLAIN AG15c210cHVzZXIAbXlzbXRwcGFzc3dvcmQ=
535 Authentication failure
*
500 Command unrecognised
QUIT
221 Goodbye

Our log from the container is

Session started. Client address ::ffff:127.0.0.1.
SMTP auth failure: Cannot validate credentials of type USERNAME_PASSWORD
SMTP auth failure: Cannot validate credentials of type USERNAME_PASSWORD
Session completed. Client address ::ffff:127.0.0.1. Number of messages 0.

[AlexGeller]

The smtp server also don't support login mechanism verification.