Hello,
First I want to say that I cannot send SMTP from my shared hosting account. I use and setup Zoho Mail for my website, all mx, spf, dkim and dmarc are valid. Mail send from zoho is successfully delivered to recipient inbox. But when Blesta send out mail using the PHP option it goes to the recipient spam folder (gmail). Viewing the full email header from gmail shows that when sending mail using php it does not used zoho mail and instead use the default mail server on my shared hosting and spf, dkim and dmarc requested by gmail were failed.
So i think to resolve the issue i need to add my own dkim signature on the header mail send out by php. But i have no idea which file exactly send out emails for invoices, new signup, billings etc. So can anyone please point me to the direction which file i will edit to add my own signature?
Thanks