I just migrated my mail from custom domain alphaweb.com.sg to Zoho last night.

I sent out a bunch of test mails from Zoho to various accounts after I migrated, some received by recipients immediately but some has been delayed for hours. The pattern it delayed it totally random, mails that were sent out later could arrived way before mails that were sent out earlier.

I've no problem receiving email from other accounts to Zoho mail though, all received immediately.

I've log all the mails I sent out in chronological order of sent time, you can see the received time from the last column, the problem is totally random, any it happened on both Gmail and Yahoo.

You may check out the log file here--> https://www.dropbox.com/s/7my04lh9ls4o6wh/Zoho%20mail%20problem.xls?dl=0

Please kindly take a look urgently.

Thank you