hi Zhang,
We already find the problem, it is because our ISP try to scan ip , because they are facing spam mail, so they relay the email from their customers to their smtp, and it cause that problem.
Now it's already solve
thanks
hi Zhang,
We already find the problem, it is because our ISP try to scan ip , because they are facing spam mail, so they relay the email from their customers to their smtp, and it cause that problem.
Now it's already solve
thanks