Android Question SMTP auth trouble: 503 or 530 error (auth)

[peacemaker]

Hi, All

Suddently B4A projects with SMTP usage stopped to work - servers return 503 like errors (different descriptions), returned immediately, without a timeout. Net. lib now is v.1.75.

The code always used SMTP1.UseSSL = True with port 465, it was OK.

Now:
1) gmail.com: java.lang.RuntimeException: Empty writer returned: 530-5.5.1 Authentication Required. Learn more at https://support.google.com/mail/?p=WantAuthError y3sm2221531ljd.62 - gsmtp


2) another server: "Empty write returned: 503 administrative prohibition. Users in your domain are not allowed to send email without authorization.


Also tried:

SMTP1.Initialize(SMTPserver,SMTPport,SMTPlogin,SMTPpass,"SMTP1")
SMTP1.AuthMethod = SMTP1.AUTH_LOGIN
SMTP1.UseSSL = SMTPssl 'here always True
SMTP1.StartTLSMode = True

Here is GMAIL sending error after timout: org.apache.commons.net.smtp.SMTPConnectionClosedException: Connection closed without indication.

Another SMTP server gives just Timeout error.

Any help ?

 

[Erel]

You can either use StartTLS mode or UseSSL. Never both of them.

smtp.gmail.com with UseSSL on port 465 works fine here. Make sure that you configure your gmail account to allow less secure apps to connect.

 

[peacemaker]

OK, Erel, thanks.
But recent months 465 port worked with SSL-true with no problem.
Just today suddently this code returns:

Send Error: java.lang.RuntimeException: Empty writer returned: 530-5.5.1 Authentication Required. Learn more at 530 5.5.1  https://support.google.com/mail/?p=WantAuthError g82sm2336062ljg.57 - gsmtp

 

[peacemaker]

What is the correct SMTP server init code sample with authorization ?

 

[Erel]

You don't need to set AuthMethod with gmail. The default method works.

Have you enabled the less secure option?

 

[peacemaker]

Yes, just a min ago - now GMAIL SMTP works OK.
But the initial SMTP of smtp.mail.ru - does not work anyway, and no such option ...

So, correct auth code sample is needed to try.

UPDATE: seems, the SMTP password was changed - that is the reason of such errors.
But no idea who\when changed it.