storage.googleapis.com?

Hi kent218:

Do you use the current Norton Security v22.17.0.183 or some other product (check at Help | General Information | About), and what Windows operating system and email program are you using?  You posted your question in the Norton Tech Outpost board where users can post any computer-related question that is not about their Norton product (see Tony_Weiss' post <here>) and we'll ask the Forum Moderators to move your thread to the correct board when we know what product you use.

I don't use Norton AntiSpam (it can't be integrated with my old Windows Mail email program and I also use SSL-encrypted POP3 and SMTP email ports) but the support article Identify Senders of Spam describes how to add a custom filter (Settings | Antispam | Filter | Blocked List | Configure) to block suspicious email addresses (e.g., donotreply @ storage.googleapis.com) and domains (e.g., googleapis.com).  Unfortunately, that might not work in your case if the people sending this spam are adding "a long chain of characters at the end" that are deliberately changed every day or so to mask the actual source of these emails and avoid detection by spam filters.

The other thing you can do is to create a message rule in your email program to block messages that manage to evade your spam filters if there is a unique key word or phrase that usually appears in these spam emails like "Google".  For example, I've created a message rule in my own email program that detects any incoming e-mail with words in the From: line like "RBC" or "PayPal" and sends them to my Junk folder so I can review them later and make sure they should be deleted.  If you let us know what email program you use we can provide further assistance.

The best way to stop this type of spam is to prevent it from ever being delivered to your Inbox in the first place by reporting spam to the service provider for your email account [e.g., GMail, Microsoft Outlook, your Internet Service Provider (ISP), etc.].  If the email is delivered to you via the email account for your ISP, for example, log in to their mail server from your browser and flag the email as spam.  See my post <here> with an example of how I do this for spam that is sent to my Microsoft Outlook (<myusername>@live.com) account when it's missed by their spam filters. These spam emails are usually sent out to thousands of e-mail addresses at the same time via a mail list, and if enough users report them as spam then the service provider's email filters will often be tweaked in a few days and begin blocking them so they never arrive in your Inbox.
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32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security Deluxe v22.15.1.8