fwrite(): send of 18 bytes failed with errno=10054 An existing connection was forcibly closed by the remote host.

Mailjet ilə email göndərərkən 'fwrite(): send of 18 bytes failed with errno=10054 An existing connection was forcibly closed by the remote host.' xeta alırdım.Bu problemi həll etmək üçün sadəcə php.ini faylından smtp_port  = 25 - i smtp_port = 587 -ə dəyişdim.

[mail function]
; For Win32 only.
; http://php.net/smtp
SMTP = localhost
; http://php.net/smtp-port
smtp_port = 587