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A comment on Ask HN: How do you protect your Mailserver from DDoS Attacks?. Parent comment
I have
* `exim-usernames` - 10 day ban instantly for anyone trying to login with a specific set of usernames (227 currently banned)
* `exim-aggressive` - 4h ban for repeated failures (SSL, EHLO, etc.) (7 currently banned)
* `exim-spam` - 4h ban for repeated spam rejections. (0 currently banned)
Plus `rspamd` for greylisting, honeypot addresses, etc.
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I have
* `exim-usernames` - 10 day ban instantly for anyone trying to login with a specific set of usernames (227 currently banned)
* `exim-aggressive` - 4h ban for repeated failures (SSL, EHLO, etc.) (7 currently banned)
* `exim-spam` - 4h ban for repeated spam rejections. (0 currently banned)
Plus `rspamd` for greylisting, honeypot addresses, etc.