#Mikrotik blacklist mac address wireless manual

As mentioned before, one of your guest was probably infected with malware, or someone nearby is using your WiFi to distribute SPAM. Most ISP's flat out block port 25 for home connections, so any of your users that are using port 25 would only be able to use it on your network anyway. All modern clients I'm aware of should be configured to use 587, 465 or such. Anything other than an email server probably shouldn't be using it anyway.

#Mikrotik blacklist mac address wireless manual

check spamlists and find if they have automatic way of unblocking, most have manual way you can do yourselfĮxactly this, or preferably, flat out block port 25 for everything on your network except your mail servers. reroute any outgoing mail trough port 25 on guest side trough your mail server and filter out any unwanted mail - do not allow 25 to go trough, or your problems will repeat themselfsĢ. the rest of the IP Range and my domain are ok.1. only the single static IP that assigned to my public Wifi.

You can set them up with a service provider that specializes in mailing list management for that, and chances are they'll be much happier with a purpose-built solution for this anyway. to a mailing list) using this public IP on purpose, then obviously tell them to stop doing that. If your managers are actually knowingly sending marketing mail out (e.g. Alternatively, outbound spam filtering might be an option, but chances are that most guests don't need outbound SMTP at all since most will be using webmail these days, and totally cutting it off, besides for specific devices, might be the easiest solution. In this case only your managers' devices will be able to send outbound traffic on port 25, but guest devices will not. You might consider limiting outbound port 25 to a known subset of devices by MAC if your network hardware supports that. If you or a guest is originating spam, perhaps also unwittingly (malware sometimes does this), this will be an ongoing problem. If you can connect to port 25 and send an email to an external recipient without authenticating, then you're an open-relay and will keep being blacklisted.Īnother cause of being blacklisted, besides acting as an open relay, is the origination of spam. should be able to send mail without authenticating, but only to known internal recipients. should be able to connect but be required to authenticate before sending mail, or c.

shouldn't be able to connect on port 25 at all, b. You can also test this yourself from outside your network using, for example, telnet-ing into port 25 manually and trying to send an email to any outside email address (such as a gmail address). They'll just attempt to bounce a message through your IP on port 25, and then check to see if they receive the message. There are online MX tools you can use to set the IP for the existence of an open relay.

If you don't have an SMTP server on that IP address, blocking all inbound SMTP traffic should be an easy way to eliminate the possibility that you're acting as an open relay unwittingly. If you have an SMTP server on that public IP, you can double-check your SMTP server configuration to ensure that no open-relay exists. You still need to manually add firewall rule.You or one of your guests may be running an open SMTP relay, perhaps unwittingly, which is often what causes blacklisting. Upload to MT and run /import file-name=install.rsc in terminal. You can also import install.rsc file, it will do all of above for you. Note: Replace IFNAME in-interface name with one you have configuredĬheck out more detailed instructions here. ip firewall filter add chain=input action=drop connection-state=new src-address-list=pwlgrzs-blacklist in-interface=IFNAME ip firewall address-list remove /import file-name=blacklist.rsc Run following to your MT device with not less that 7d schedule (sources are not updated more frequently anyway): This is automated process so if you see errors in the final list open an issue please. networks.Īnd reformat it to allow automatic import to MT routers. This is a blocklist I use with on my Mikrotik router to block all connections from known spam/criminal/etc.