SMTP Error (435): Authentication failed

[ainul]

Halo, How to fix Error SMTP Error (435): Authentication failed In the Roundcube Please Help Me, Sir . ASAP

[6michel]

Hi ainul,

If you face SMTP error 535 or 435 Authentication Failed while sending an email from round cube, then you can check the following things.

achieve file>>>  //roundcube/config/main.inc.php

and change

$rcmail_config['smtp_user'] = ‘%u’;
to
$rcmail_config['smtp_user'] = ”;

Save the file

it should be FIXED….

Yours sincerely

[ov3rwatch]

Im sorry but this does not fix this issue, if anything, this is a bandaid covered in malaria for your system. All this does is send mail through roundcube without SMTP authentication. In order for this fix to work your server would need to be an open relay which opens your system up to abuse! This workaround opens your system up to become a spambot...

A bug was reported to the developers in bugtrac about this issue, and it was closed without resolution with the caption `sounds like your mail server isnt working anymore`. THIS IS THE ISSUE.

Considering that this post is what google links to when searching up this error (result number 1) i felt it important to let people know that while this might make roundcube work, it shouldnt be seen as a viable solution to a real problem. your server has a configuration issue that you need to work out, turning your server into a relay so that roundcube will "work" shouldnt be seen as a "fix".

Apologies for grave digging this thread but it has historical significance with google so this needs to be said here for people who dont understand the implications of what this does. If your server is set up righ tthis fix shouldnt work anyways, youd get an error of (550 Relay Access Denied).

Regards,
Ov3rwatch