Search found 7 matches

by ves
2019-07-11 07:40
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

Dravion wrote:
2019-07-10 14:13
Maybe this can help you out with your Problem
https://www.hmailserver.com/forum/viewt ... 81#p213281
Wow - thanks - you save me some days - I was planning to do almost the same
by ves
2019-07-10 13:42
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

I run with 5 on my production machines I changed to 5 too - but seems this does't help :( ? Is it sure that 550 Unknown user is related to this option. Just saw this is fixed in RvdH's builds that I use https://github.com/hmailserver/hmailserver/issues/160 I just checked one of my installations - I...
by ves
2019-07-01 13:14
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

mattg wrote:
2019-06-26 01:01
ves wrote:
2019-06-25 12:31
What do you will recommend as value ? I'm thinking that 5 should be ok ?
I run with 5 on my production machines
I changed to 5 too - but seems this does't help :( ?
Is it sure that 550 Unknown user is related to this option.
by ves
2019-06-25 19:29
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

185.222.211.13 is on the SpamHaus SnowShoe SPAM list ( https://www.spamhaus.org/faq/section/Glossary#233 ) so may I suggest this to begin with... The script below may not catch all of them but it's a start and something we can build on. The script is a subset of my own Eventhandler script. The COM ...
by ves
2019-06-25 12:37
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

185.222.211.13 is on the SpamHaus SnowShoe SPAM list ( https://www.spamhaus.org/faq/section/Glossary#233 ) so may I suggest this to begin with... The script below may not catch all of them but it's a start and something we can build on. The script is a subset of my own Eventhandler script. The COM ...
by ves
2019-06-25 12:31
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

Re: How to block SMTP attacks for sending multiple mails...

mattg wrote:
2019-06-25 11:23
In Protocols >> SMTP >> RFC compliance

what do you have for 'Maximum number of invalid commands'?
:( - 100
I never look here :( I was thinning that default is something like 5-10
What do you will recommend as value ? I'm thinking that 5 should be ok ?
by ves
2019-06-25 09:48
Forum: Off-topic discussions
Topic: How to block SMTP attacks for sending multiple mails...
Replies: 15
Views: 1712

How to block SMTP attacks for sending multiple mails...

Hi all, I'm getting hit by some spammers that try to send several mails to my server to not existing mailboxes (trying to guess the right ones) SMTPD" 7896 52740 "2019-06-25 00:58:41.666" "185.222.211.13" "SENT: 550 Unknown user" Does someone had same situation and is there a script that can be conn...