Unable to create MX record in .lk domain

Unable to create MX record in .lk domain

Hi,

I'm from Sri Lanka and I have purchased a local domain (.lk) from our service provider and it doesn't allow to create MX record as you have mentioned in the guideline. Please see attached image. Because in the "value" field it's asking for an IP address. (172.29.250.162, 172.29.250.163, 74.201.155.79)

When I type "mx.zoho.com." under value field, it's prompting an error saying type a valid address.

I have used some IP address which I have seen on some forums and now it only allows to send email, but not receiveng. Appreicieate if someone can assist me on this.

Thank you in advance.