Certain types of emails not reaching Zoho Support

Since the issues around the attacks were highlighted yesterday, we have noticed certain types of emails aren't reaching Zoho Support.

Some of the emails got through to Zoho Support overnight, but not all, and now new emails from this morning aren't reaching Zoho Support either.

Some of the emails are coming from a no-reply email address.

Other emails have 5-7 pdf attachments.

I have manage to forward on the no-reply email from a different email address and it has reached Zoho Support.

I also sent a test email with attachments to see if it's attachment causing the block, but my test email reached Zoho Support.

Please let me know what further information you need to look into this issue.