Dedicated Servers : Deny Sendmail connections

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This dedicated server discussion started by digfut on 24 July 2008

I have found some sendmail connections from spammers that use the accounts of my customers.

I want to know if I can deny connections to sendmail from all countries except Spain. This way most of foreigns spammers could not use the accounts of my customers to send spam.

My servers has Sendmail version 8.13.6.

Sometimes is easy to login in the email account of a customer. For example:

Account: peter@mydomain.com
Password: peter

and like most of mail servers use mail.mydomain.com for pop3 and smtp is easy to authenticate.

It´s hard to believe but some users are so stupid that put that type of passwords on their accounts, and spammers thanks them.

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