Good day!
We have to report that today we have been subjected to a spam attack on our service. Spammers used emails like xxxx@cleantalk.org to send spam comments / registrations / subscriptions. At the moment, about 4,000 websites have been affected by the attack. This is not the first such attack on our service, just a couple of weeks ago we also faced a DDoS attack, which we quite successfully blocked.
PS
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I will add a little message, that there would be no misunderstanding.
It was not spam via SMTP and the substitution of the sender's address. This spam is caused by the fact that spammers use your public email for newsletter subscriptions, etc. on other web sites.
The problem is actually much wider, we are a small company and this did not cause us any difficulties. But for large companies, for which only the business is tied up by e-mail, receiving orders for example?
Suppose Vasya Pupkin took an online store as an example, took their email address. mail for orders such as order@example.com and subscribed with this address to 10,000 newsletters on various sites. Every day, news and other newsletters will be sent to this address, the work of the sales department in this store can be significantly slowed down and cause losses for the business, including reputation ones.
There are several problems here:
1. Web sites are poorly protected from spam.
2. Possible problems for the company, as one-time starts to receive a lot of messages.
3. Reputational loss. Site owners see spam from you, web site visitors can see spam from you.
What do you think, in what ways you can avoid it.