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Huge amounts of mail with random senders and domains

Posted: Wed Jan 06, 2021 10:48 am
by lars.nilsson
During the last month or two I have started to receive large amounts of spam mails which do not get flagged as spam.
The email addresses, including the domain names, seem to be constructed from random letters and numbers.
How do I get them to be flagged as spam, and be automatically removed?

Re: Huge amounts of mail with random senders and domains

Posted: Wed Jan 06, 2021 11:49 am
by rusticdog
I would start by trying a custom filter that looked at the length of the domain.

Try the below, and if it goes well, then you can set the filter to autodelete the emails under the Options tab for the filter.

If the FROM field, CONTAINS, REGEX
@[:print:]{40,}
If the SENDER, IS NOT ON FRIENDS LIST

The filter is looking the @ symbol in the FROM, then 40 or more printable characters. If need be you can reduce the 40 to 30.
And also if the filter tags any legitimate senders, you can add them to your Friends List so future messages won't be tagged.

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Re: Huge amounts of mail with random senders and domains

Posted: Wed Jan 06, 2021 7:01 pm
by rusticdog
Just to add, to add the Friends List rule click the small drop down beside Add Rule >> select Spam Tool rule >> change to Sender not on Friends List.

Cheers