Email Error .. my ip public blocked
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As almost all of our clients used to run SBS, all email was locally hosted. and 2 still are (one on SBS 2008, the other on Exchange 2010).
They have never been blacklisted because I have always blocked outbound port 25 on my networks for all devices except the email server itself.
Getting blacklisted requires allowing something to happen. It does not just capriciously happen.
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@JaredBusch said:
As almost all of our clients used to run SBS, all email was locally hosted. and 2 still are (one on SBS 2008, the other on Exchange 2010).
They have never been blacklisted because I have always blocked outbound port 25 on my networks for all devices except the email server itself.
Getting blacklisted requires allowing something to happen. It does not just capriciously happen.
Exactly - that is why I mentioned using a dedicated IP that the firewall only allows traffic from the mail server itself to use, then you don't have to worry about blacklisting... but Jared's method is equally as good too.
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@JaredBusch said:
Getting blacklisted requires allowing something to happen. It does not just capriciously happen.
I've had customers long ago get blocked for being on a bad block, even though their address was not in question.
Blocking can be done by reporting, so competitors can get you blocked, or used to be able to.
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Thanks any answers and explanation ... problem solved, after requesting to microsoft and re setting my send connector issue ..
1000 thumbs for this forum -
So glad that we were able to help and very glad to have you here!
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how to mark this post to [solved] ..
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That's not a functionality that we have here yet. But we might have it soon. It is being tested on some of the other forums.
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@scottalanmiller said:
- Lack of knowledge of email systems (or else they would be hosted) leading to more issues below
Wait, are you saying that anyone who runs on-premise e-mail is an idiot?
I have been blacklisted in the past, when I was younger and naive, but I reckon configuring the firewall to only allow the mail server to use port 25 solves 99% of problems. If people you know are constantly getting blacklisted than I suggest they've got much bigger problems than simply using on-premise e-mail. It's like saying "my house keeps burning down so I've decided to move to a fire-proof house".
I've never heard of competitors being able to block your IP address by simply reporting it. That sounds a bit dodgy.
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@Carnival-Boy said:
I've never heard of competitors being able to block your IP address by simply reporting it. That sounds a bit dodgy.
Blacklists are not big companies, are all individual and can do whatever they want. Some of them accept reports, or used to, as to spam. If you think about it, how does anyone determine that something is a spam relay? The blacklists have to get that information from somewhere.
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@Carnival-Boy said:
@scottalanmiller said:
- Lack of knowledge of email systems (or else they would be hosted) leading to more issues below
Wait, are you saying that anyone who runs on-premise e-mail is an idiot?
That's not what I said. If you read the lead in to the list, I pointed out that these things were things that typically or generally happened with on premises systems. So "anyone" doesn't apply here. And not being an email specialist is in no way the same thing as an idiot, so the idiot bit does not apply.
What I was pointing out is that because by and large the vast majority of email systems should be hosted but many are not there is a very high incidence of people lacking deep email experience that, partially due to that very lack of knowledge and experience, decide to run email in house and/or lack the wherewithal to convince the powers that be that hosted email is needed. This creates a situation where there is a higher chance that on premises email systems are being run by people who don't have a lot of email experience or knowledge - it's self fulfilling in that way. People with the most email experience and knowledge are the most likely to be pushing for email to be hosted (talking averages here, not specific cases) and will also have the most clout to convince management to do so.
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@scottalanmiller said:
If you think about it, how does anyone determine that something is a spam relay? The blacklists have to get that information from somewhere.
Most of them have email addresses setup to get spam and if they receive on the address, it is added to the database and blacklisted once some threshhold is met.
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@JaredBusch said:
Most of them have email addresses setup to get spam and if they receive on the address, it is added to the database and blacklisted once some threshhold is met.
Many do, sure. But at least in the 2000s, it was very common for blacklists to accept reports on IP addresses and block based on that.
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A quick search and SpamCop accepts end user submissions. I found some sites listing tons of services for submissions (dozen or so, if that is tons) suggesting that they all accepted end user submission. Only takes a few of the common ones to be an issue for someone if someone starts submitting them.
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@scottalanmiller said:
A quick search and SpamCop accepts end user submissions. I found some sites listing tons of services for submissions (dozen or so, if that is tons) suggesting that they all accepted end user submission. Only takes a few of the common ones to be an issue for someone if someone starts submitting them.
submissions of what?
"Hey block this IP because I say it is bad?" or "hey here is a copy of a spam email to add to your algorithm."Significantly different.
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@JaredBusch said:
submissions of what?
"Hey block this IP because I say it is bad?" or "hey here is a copy of a spam email to add to your algorithm."Significantly different.
Why is it different? Since you can craft the email to submit or modify it however you want, you are literally submitting an IP address manually.
While the submission process is complex and you need an example, none of it is even remotely difficult to use as a pure IP address submission. Use any SPAM email or craft one, put in the IP source that you want blocked and submit.
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@scottalanmiller said:
Why is it different? Since you can craft the email to submit or modify it however you want, you are literally submitting an IP address manually.
Because the first is you simply taking my word for it and blocking an IP. The second is adding a (possibly faked email) to an existing database of emails that does not just block for a single thing. it uses an algorithm to set the scores.
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@JaredBusch said:
Because the first is you simply taking my word for it and blocking an IP. The second is adding a (possibly faked email) to an existing database of emails that does not just block for a single thing. it uses an algorithm to set the scores.
But not for the IP address right? Presumably we all have an endless supply of spam. yes that is an assumption but I'm confident that this is reasonably true. Given that we have an endless supply of example spam to work with, the IP address portion is and always has been "taking their word for it" in cases of submissions. Am I missing some component here where I don't just choose the IP address to submit (if I want to?)
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I totally get that one takes a little more work and isn't as easy as a "block this ip please" form. But given the boilerplate component there is still just an IP field to modify as desired.
Although I do believe that there used to be pure IP address fields to fill out long ago. Good that that has changed (from what I can tell) but it doesn't appear that the effort to block someone arbitrarily is any harder than it used to be, only submitting at all is a tiny big harder.
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Now what does improve this situation some is that it appears that most blacklists require paid membership in order to be able to submit. At least the ones that I have investigated. So regularly doing this to people seems like it might cause issues with your account, at the very least. Or so one would hope.
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I assume that submissions work like '1000 people submit spam example = this is spam' but '1 person submits spam example = this is not spam'. So assuming you don't have 1000 competitors all colluding to screw you you should be ok.
