The ISPs do. Their mail servers probably remove some high percentage of mail before it even gets to you and your mail client for additional processing. It's also possibly temporary, or intermittent Morris. Our dart league has some mailing lists and some % of the mails that go out, even to the small lists of specific people (say 4-6 people) get bounces on a random, periodic basis from my or other well known mail providers.

Bill- 5G is used in two different contexts. For Cellular, 5G (5thGeneration) is new technology offering faster speeds via Cellular and wouldn't impact your at home speeds. For your in home network, you're referring to 5Ghz as compared to 2.4Ghz for the frequency of your WiFi broadcast. 2.4Ghz is slower, but still not "slow" and has better range, while 5Ghz has a smaller range but faster speeds. In my house 3 floors, router in the basement, I tend to use 2.4Ghz to connect and have an extender to get the signal to the top floor.

BTW: For home users - little known fact... If you run Ethernet cables from your cable modem to fixed ports around your house, or use your modem as a bridge to connect to your own router, which is then connected to ports around your house... AND you have Cat5 (Not Cat5e or Cat6x) Ethernet cables, you're going to be limited to100 MB/s. I ran my Cat5 when I moved in, circa 1997 and Cat 5e or Cat 6 weren't out yet -so I'll be limited until I decide to re-run wires (not going to happen). Good news, mostly everything I have now also runs wireless if I want/need that speed.

So, if you're paying for higher speeds and not getting those, try the test again after a reboot without your network cable attached. I wouldn't be surprised to see truer speeds over WiFi vs. Wired. And disclaimer - Every modem and router and network card is configurable.... Your mileage may vary and be completely dependent on the configuration in your house.

 

227 Mb down, 10 Mb up.

 

358 down, 11.5 up

 

281 and 24 today

 

Car cliche's that apply...

Just remember, no matter how fast your Internet is, someone else's is faster.

Q: How fast do you want to get?
A: How much money do you have?

 

Speed cost money...How fast do you want to go ???

 

Here is part of the message I get when I click on the link in the "returned mail" email:
RL000003 :: Mail to Comcast is queued and I see RL000003 in my email logs. What does this mean?

Comcast has instituted rate limiting on all inbound email traffic. This step was taken to protect our customers and our email system from unwanted spam and malicious attacks. Any systems affected by this rate limit will receive a 4xx message (temp-fail) during the SMTP transaction. This message is designed to instruct the sending server to try again at a later time to deliver its email.

Sure looks to me like they are filtering emails, including mine. At teh bottom of this message was the phone number to call, for Comcast Customer Assurance, the dumbasses that couldn't do anything.

 

This appears to be a report back to you that your domain may be sending too much mail to Comcast addresses, not necessarily you sending too many. I would try again later like it says. If you read it, basically, the domain you're in appears to be sending more than Comcast expects from that domain. If there were a spam or DDoS type attack, this would throttle it. You might just be collateral damage here.

https://postmaster.comcast.net/smtp-...s.php#RL000003

I'd also think that this is much deeper than the normal service desk analysts would handle.

Also- don't confuse filtering with limiting. Limiting is just keeping volume down using some method to keep their infrastructure from imploding. Filtering is their ability using some data, meta-data and other info to systematically remove absolute junk before it gets to you.

For info.. Our mail team at work estimated that up to 90% of inbound mail is junk/spam and is blocked at the first set of filters, and that's at the lowest level of restrictions. I'm in Pharma, so some of those ridiculous emails could be valid pending what business team is working on what new drugs. So think of ALL the Comcast customers (~27M) and the amount of incoming email daily.

 

Tested mine just now. My plan is for up to 150Mbps down and 10Mbps up.

My laptop on wifi:
57.19 down
10.76 up

My desktop hard wired:
164.83 down
10.96 up

 

Gary, the domain name I use it my own and only one other person can use it besides me- my wife. I send single emails with the exception of when I email my fellow Board members of our HOA, totaling five. 98% of my emails are just short emails to friends and families. So there is no way on earth that their computers should think I, nor my domain, are spammers.