從Google的「G Suite工具箱」偵錯工具顯示，旅發局大抽獎的「hknycd.com」網域被偵測出重大問題，郵件收發作業很可能受影響。香港資訊科技商會榮譽會長方保僑稱，這證明旅發局抽獎網站傳送電郵驗證碼的系統很可能是被Google封鎖了。另外，根據網上工具MXToolBox，抽獎網站域名已被列入最少一個國際黑名單。

方保僑說抽獎網站「死機」是意料中事，因供登記時間太少，質疑旅發局為何不提早數天讓市民登記。旅發局昨晚稱，初步發現網站派發驗證碼一環出錯，又稱活動過程中系統未有超出負荷，流量只佔容量約兩成，而所有提交的資料均屬完整，並有加密處理。局方稱為公平起見，將延遲抽獎，頭獎10名幸運兒毋須在抽獎後24小時內登記領獎，而所有得獎者亦會獲電郵通知。旅發局對此表示抱歉。

Francis Fong Po-kiu, the president of the Information Technology Federation, said the server breakdown was “totally expected”.
“Of course the server will be overloaded when a huge amount of people flood the website in such a short period of time,” Fong said.
"The problem could have easily been avoided if the organisers had opened the registration for a few days ahead of the draw for people to sign up. Millions of people would have easily registered. I do not see why they only allow people to register from 6pm on Tuesday.”
He also said the server might have thought the organisers were sending out spam emails if they sent out a large amount of verification codes within a short period of time.
He suspected some emails might either be blocked or labelled as spam.
The organisers’ domain, hknycd.com, appeared to be blacklisted, according to the website MXToolBox.

Google的「G Suite工具箱」偵錯工具顯示，旅發局大抽獎的「hknycd.com」網域被偵測出重大問題，郵件收發作業很可能受影響。香港資訊科技商會榮譽會長方保僑指出，這證明旅發局抽獎網站傳送電郵驗證碼的系統出問題，很大可能是被Google封鎖了。

另外，根據網上工具「MXToolBox」，「hknycd.com」域名已被列入最少一個國際黑名單。