I have this really really bad problem
I have been getting these undelivered mail notifications in my inbox and I noticed the "from" addresses in the original email (that bounced) uses my domain address. So a lot of these email addresses would look like this: Agabeyoglu.Evren@mydomain.com
(mydomain being my personal website address)
The original email would be spam like stuff - "viagra vs. cialis"
The first thing I thought was my mail server was being used an a open relay but I have this thing locked down and I did some online tests and all showed there was no open relay.
I am completely perplexed. I modified the main.cf file for postfix and removed the smtp mail relay which is my ISP smtp since they block all port 25 traffic.
So right now, I am kind of lost as to what is causing this issue. I looked at all my logs but I didn't really notice anything out of the ordinary. I would not have even known this was happening if it were not for the bounced emails I keep getting.
Does anyone here have any experience with this kind of issue or could at least give me a hypothesis of what could be going on here.
I am a complete noob so if there are any logs or other information you need, let me know and I will post it. Shoot, I will be your personal slave if that will get me through this.
Thanks a million and I will buy a beer for anyone who can lead me to a solution