Hello, i am getting attack in my server.
I have my IP in blacklist, i have checked PHP logs:
[Thu Jun 23 18:41:55 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:56 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:56 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:57 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:57 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:57 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:58 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:41:59 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:00 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:00 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:01 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:01 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:02 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:05 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:06 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:06 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
[Thu Jun 23 18:42:07 2016] [error] [client 72.167.190.172] sendmail: fatal: User agenciae(508) is not allowed to submit mail
Any idea? suggestion to stop this?
Regards,