SMTP 5.5.1 authentication required Zoho mail

[HannahTRL]

I’ve had a good search but can only find Gmail solutions for this, which aren’t helping so hoping someone can help.

I’m trying to set up SMTP settings. I use Zoho mail for my mail provider but it’s with a personalised domain which then points to Zoho using a name server DNS record. I’ve tried entering the different SMTP info supplied by Zoho but I keep getting a ‘5.5.1 authentication required’ error message:

It looks like there was a problem reaching your SMTP service
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.

I’ve double checked the settings and all seems as provided. And I’ve tried some alternatives too, but still no joy.

Any ideas?

[ian_roberts]

Looking at the Zoho help page for SMTP, you definitely want the port 587 version rather than 465. Beyond that the only thing I notice is this sentence:

You may require an Application-specific Password to set up the account on other devices if you’ve enabled Two-Factor Authentication.

If you have 2fa then QuickFile will definitely require an app-specific password.

[HannahTRL]

Thanks Ian. I’ve used the 587 port and did try the app-specific password but I was unconvinced with the process on Zoho’s side of things and sure enough, it returned the same error message. I’ll try again today and see if anything changes.

[QFMathew]

Hi @HannahTRL

Please let us know how you get on.

If you require any further assistance with this, we’ll try and help further. As @ian_roberts mentioned, it should be just the case of using an app password (which is similar to what the Gmail guide goes through).

[HannahTRL]

Thanks guys, I tried again with various things. An alternative Zoho server address I found, as well as a new app password worked.