Normal mail adreslerine maillerim gidiyor ama 3 gündür gmail hesaplarına mail gönderirken aşağıdaki hatayı alıyorum. Benim çözmem gereken bir şey mi var yoksa host firmasının mı düzeltmesi gerekiyor.

SMTP error from remote mail server after end of data:
550-5.7.25 [46.37.117.42] The IP address sending this message does not have a
550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not
550-5.7.25 match the sending IP. As a policy, Gmail does not accept messages
550-5.7.25 from IPs with missing PTR records. For more information, go to
550-5.7.25 https://support.google.com/a?p=sender-guidelines-ip
550-5.7.25 To learn more about Gmail requirements for bulk senders, visit
550 5.7.25 https://support.google.com/a?p=sender-guidelines. 41be03b00d2f7-7eaeabe292dsi2907712a12.356 - gsmtp