Hello David,

thanks for your information. Maybe fail2ban is a solution. I would prefer to 
solve the problem with board funds from James.

Perhaps the solution would be to extend the handlers to stop after a certain 
number of failed attempts?

Best wishes

Günter

> David Matthews <m...@dmatthews.org.invalid> hat am 07.06.2023 10:29 CEST 
> geschrieben:
> 
>  
> >I run a James mail server (james-server-spring-app-3.8.0). The log file 
> >shows that the server is constantly being attacked. This is normal, the 
> >server is on the Internet.
> 
> My experience is that there is a sharp increase on attacks on small mail 
> servers since maybe April. This is not a James issue - I run exim/dovecot in 
> production setup. 
> 
> I'd strongly suggest looking at fail2ban and this may give a pointer:-
> 
> https://dmatthews.org/webmail.html#fail2ban
> 
> Fortunately for me fail2ban's regex for exim is ok as is; writing regex is 
> one of my least favourite tasks. Using James, you'll have some work to do 
> there.
> 
> As an aside, it seems more or less concurrent to this large increase in 
> attacks, free email providers are all tying to get a phone number from you. 
> Gmail, not so forcefully, but another foreign provider (I have these legacy 
> accounts for testing purposes) told me there had been a hacked entry into my 
> account and to do a password reset I now have to supply a phone number. For 
> sure they are lying and there is no way they'll get a phone number from me 
> :-) Online attack on anonymity?
> 
> --
> David Matthews
> m...@dmatthews.org
> 
> 
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-- 
Günter Paul
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