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SMTP with Authentication?

[quote user="bpczi"]

Hi!

I am a newbie and someone is trying to send mails via my mercury installation. There were about 13.000 Mails in the queue which I have deleted!

What I have to configure that my mercury installation is more safe? I have activated the checkboxes

Do not permit SMTP relaying of non local mail

and

Use strict local relaying restrictions

Now he can not send mails but it causes a lot of traffic because he is trying and trying...

Is there a way to configure mercury so, that smtp is only allowed after authentication? Or is there a better way to counteract against that? Is it better to use another port than 25?

What do you prefer in such a case? 

I am very sorry about my bad English and i hope, that you understand my problem!

Many thanks for your help!

best regards

 bpczi
 [/quote]

Turning off relaying is a start.   You can turn on the authentication for relaying but it's not going to help here since it will not keep him from trying.  You may be able to block his IP address from sending at all and that will help reduce the load.  The basic point is you have blocked the relaying and after awhile he'll go away.

 

 

[quote user="bpczi"]<p>Hi! </p><p>I am a newbie and someone is trying to send mails via my mercury installation. There were about 13.000 Mails in the queue which I have deleted! </p><p>What I have to configure that my mercury installation is more safe? I have activated the checkboxes</p><p>Do not permit SMTP relaying of non local mail</p><p>and</p><p>Use strict local relaying restrictions</p><p>Now he can not send mails but it causes a lot of traffic because he is trying and trying...</p><p>Is there a way to configure mercury so, that smtp is only allowed after authentication? Or is there a better way to counteract against that? Is it better to use another port than 25? </p><p>What do you prefer in such a case? </p><p>I am very sorry about my bad English and i hope, that you understand my problem! </p><p>Many thanks for your help! </p><p>best regards</p><p> bpczi  [/quote]</p><p>Turning off relaying is a start.   You can turn on the authentication for relaying but it's not going to help here since it will not keep him from trying.  You may be able to block his IP address from sending at all and that will help reduce the load.  The basic point is you have blocked the relaying and after awhile he'll go away.</p><p> </p><p> </p>

Hi!

I am a newbie and someone is trying to send mails via my mercury installation. There were about 13.000 Mails in the queue which I have deleted!

What I have to configure that my mercury installation is more safe? I have activated the checkboxes

Do not permit SMTP relaying of non local mail

and

Use strict local relaying restrictions

Now he can not send mails but it causes a lot of traffic because he is trying and trying...

Is there a way to configure mercury so, that smtp is only allowed after autentication? Or is there a better way to counteract against that? Is it better to use another port than 25?

What do you prefer in such a case? 

I am very sorry about my bad english and i hope, that you understand my problem!

Many thanks for your help!

best regards

 bpczi
 

 
 


 

<p>Hi! </p><p>I am a newbie and someone is trying to send mails via my mercury installation. There were about 13.000 Mails in the queue which I have deleted! </p><p>What I have to configure that my mercury installation is more safe? I have activated the checkboxes</p><p>Do not permit SMTP relaying of non local mail</p><p>and</p><p>Use strict local relaying restrictions</p><p>Now he can not send mails but it causes a lot of traffic because he is trying and trying...</p><p>Is there a way to configure mercury so, that smtp is only allowed after autentication? Or is there a better way to counteract against that? Is it better to use another port than 25? </p><p>What do you prefer in such a case? </p><p>I am very sorry about my bad english and i hope, that you understand my problem! </p><p>Many thanks for your help! </p><p>best regards</p><p> bpczi  </p><p>   </p><p>  </p>
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