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TOPIC: how to prevent 3rd party email?

how to prevent 3rd party email? 11 years 4 weeks ago #11207

  • glacier
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Hey all,

I am running Server2003 with IIS for my SMTPand WEB hosting.
I am using this setup for more of a learning experience than funtionability. I am having a problem stopping 3rd party email.
I have my inetpub files for web and mail on 2 seperate partions seperate from the C: drive that houses the OS. After I move the inetpub files to the drives I use, delete them from the C:/ drive, the next day the files are back on the C: drive being used by a program that I can not identify. In the newly created inetpub files are a few hundred emails not sent by me.
I know I am missing something but all the resouces I have been using are just sending me in circles :roll: A few companies have sent me complaints about them recieving spam from my IP.
Any help would be greatly welcomed!!

Glacier
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Re: how to prevent 3rd party email? 11 years 4 weeks ago #11208

  • DaLight
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Your server is probably running as an open relay, allowing unauthorised computers to send mail through it. Check out this link for instructions on how to stop this.
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Re: how to prevent 3rd party email? 11 years 4 weeks ago #11212

  • glacier
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Thanks Daylight. That was actually the link I used when I set up the pop3 service and I did have the wrong relay settings entered. What I find hard to believe is that having that relay open would allow someone to come in and create folders on my C:/ drive to hold the emails they are relaying. I guess what I am asking is, do I have more security problems that could have been caused by having this relay open for a period of time?

Glacier
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Re: how to prevent 3rd party email? 11 years 3 weeks ago #11218

  • DaLight
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Glad to hear your problem's been sorted out. Actually, the spammer isn't actually gaining direct access to your C:\ drive. These files are created automatically when emails are sent using your SMTP server.
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