[CentOS] sendmail security
webmaster at ew3d.com
Wed Sep 20 16:54:38 UTC 2006
Alexander Dalloz wrote:
> John Hinton schrieb:
>>> On Wed, 2006-09-20 at 05:12, abhishek singh wrote:
>>>> yes i am using SMTP Authentication , but when i m
>>>> doing telnet to my server on 25 port so i am able to
>>>> send mail by unknow user that in in not my mail server
>>> [ snip ]
>> Do you have telnet open to the outside world? If so kill it and only
>> allow ssh with the proper extra security setup. You may need to open
>> telnet for a little while for testing purposes, but don't leave it
>> that way.
> What has using the telnet client for testing a daemon on a tcp port to
> do with running a telnet daemon?
> Answer: nothing.
>> John Hinton
My bad. I didn't know you could do that! I had always started the telnet
service before even trying!
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