Issue with 553 for an existing email alias

Issue with 553 for an existing email alias

Hello,

I have a problem with the error 553.

I have setup additional domains in Zoho mail control panel and run through all the steps of checking the domain owner, mx records etc.

I have created an email aliases linked to one of the accounts registered with Zoho.

I have entered the standard SMTP information - I tried both SSL and TLS in a dedicated php file that controls the website contact form but I didn't succeed in sending the message through.

If I compose an email directly to the email alias everything is working fine; where I am mistaken here?

The website is solariana.ro - Contact section.

Here is an extract of the configuration file:

// Choose here whether to use php mail() function or your SMTP server (recommended) to send the email.
// Use 'smtp' for better reliability, or use 'phpmail' for quick + easy setup with lower reliability.
$emailMethod                = 'smtp'; // REQUIRED value. Options: 'smtp' , 'phpmail'

// Outgoing Server Settings - replace values on the right of the = sign with your own.
// These 3 settings are only required if you choose 'smtp' for emailMethod above.
$outgoingServerAddress      = 'smtp.zoho.com'; // Consult your hosting provider.
$outgoingServerPort         = '587';                  // Options: '587' , '25' - Consult your hosting provider.
$outgoingServerSecurity     = 'tls';                 // Options: 'ssl' , 'tls' , null - Consult your hosting provider.

// Sending Account Settings - replace these details with an email account held on the SMTP server entered above.
// These 2 settings are only required if you choose 'smtp' for emailMethod above.
$sendingAccountUsername     = ' contact@solariana.ro';
$sendingAccountPassword     = 'password';

You can test with an email the contact form to see the error in real time.

Thank you for suggestions or help on how to fix this.

Razvan