Task ‘Mailer – Sending’ reported error (0x800CCC0F) : ‘The connection to the server has been lost. If this problem continues, contact your server administrator or ISP. The server responded: 501 Too many syntax or protocol errors’
Kurangi jumlah penerima email di email yang dikirim atau periksa alamat tujuan pastikan alamat email tidak diketik dalam format ‘nama@domain.tld’ (ada tanda ‘ di alamat email).
message has lines too long for transport
Error tersebut terjadi karena baris di email terlalu panjang, kurangi jumlah karakter di dalam 1 baris, pecah jadi beberapa baris.
Ref: https://www.emailonacid.com/blog/article/email-development/line-length-in-html-email/