OK I managed to solve For those who are having this problem and who have a situation like mine where they have 2 computers connected locally It was enough to disable Link-Local Multicast Name Resolution (LLMNR) on windows Somehow it was impacting, I was able to find this out using the Microsoft Netw...

extremely slow :?: We are talking about 1 second right? Yes comparing 1 second to 0, in a single shot it seems little but in an average daily amount of 60 thousand the thing complicates That's just ridiculous...but if you really need to bring this down if i were you i would try to look for the caus...

extremely slow :?: We are talking about 1 second right? Yes comparing 1 second to 0, in a single shot it seems little but in an average daily amount of 60 thousand the thing complicates is 1 second for each request so the server is much slower it takes 1 second to give the answer while the other li...

i second that ... more details needed .. and my question is: are you sure it is mailserver related only? ( do you have the same experience if you transfer files between the 2 computers ) Yes, only the HMailServer, if I make an FTP connection using the same network for example is extremely fast, Wha...

Of course, follow the entire log of the item that is slow, I don't do any SPAM or ANTIVIRUS queries "TCPIP" 2820 "2020-06-09 13:19:29.229" "TCP - 10.10.0.20 connected to 10.10.0.10:8027." "DEBUG" 2820 "2020-06-09 13:19:29.229" "TCP connection started for session 30" "SMTPD" 2820 30 "2020-06-09 13:19...

Hello everyone, I have 2 servers both with independent internet connection, but with a direct network connection between the two 1Gb computers both machines have a 2Mb internet link Machine 1 sends the STMP command to machine 2 that has HMailServer installed, It happens that if machine 1 sends the c...

Problem solved!
In fact the problem was in the PfSense Firewall, but as the machine is rented from a datacenter, I'm not sure what they did to fix it,
but after much insistence some settings changed and the problem solved, it must be something very specific that they have configured!

He had already said it is nothing to do with office 365: Regardless if its not possible to reach a Office 365 Inbox or its a Office 365 Enterprise Online issue, the solution to this problem is still the same: Contact Microsoft Support and ask them why your Office 365 Account allows certain Email wi...

It could be an edge device, or a firewall device on your network that is 'inspecting' mail It could be many things... Are you sure that there is no local Antivirus on the machine with hmailserver installed Hello There is no antivirus, the machine is Windows 2019 Server with hMailServer, I disabled ...

Hello I am not using a "Relay Server" I'm sending the email to an Office 365 account, but if I send it to any other, the problem is the same This is what I find strange, this seems to be the exact size of the message, that is, it sends the entire message, but in the end it cancels the sending I sent...

I will send the complete error log ------------ "DEBUG" 984 "2020-04-23 15:24:39.938" "Creating session 4" "TCPIP" 984 "2020-04-23 15:24:39.938" "TCP - 10.10.10.10 connected to 10.10.10.20:8027." "DEBUG" 984 "2020-04-23 15:24:39.954" "TCP connection started for session 3" "SMTPD" 984 3 "2020-04-23 1...

Hello, In the .EML file created in the DATA folder, it is correct, If I try to open it in my email program it opens the email normally with the attachment, In other words, the email was created successfully, but something is preventing it from transmitting to the remote server, Since if I don't atta...

Hello,
So I think it's something else
This computer only has HMAILSERVER installed, I removed everything on windows, firewall, windows defender, is there anything else that could be ??

Hello everyone I'm having the following error below: "The write operation failed. Bytes transferred: 16384 Remote IP: XXXXXXXXX, Session: 7, Code: 10054, Message: An existing connection was forcibly closed by the remote host" However, this error only occurs when sending an email with attached file, ...

spyderox I made a change that seems to have had an effect, I don't know yet if it has a relationship but after I changed I still didn't have the error, Check in the windows settings on the network adapter, in the power part, if the option that windows can disable the adapter to save energy is not ch...

And after that the An error occured while executing 'Task-DeliveryTask'

Yes, I suspect too I have the same hMailServer with the same settings running on a windows server 2012 and it works perfectly The only things that change are 1) The Windows Version 2) The amount of memory 3) Connecting to a Remote SQL Server Most of the hardware specs on my new server have changed ...

Hello, I'm having the same problem as you do on my server with hMailServer, Same configuration as Win Server 2019 + SQL Server On an old machine with windows server 2012 there is no problem and the configuration of both hMailServer are the same, Did you get any progress? Nope, no progress yet, but ...

Hello,
I'm having the same problem as you do on my server with hMailServer,
Same configuration as Win Server 2019 + SQL Server
On an old machine with windows server 2012 there is no problem and the configuration of both hMailServer are the same,
Did you get any progress?

Is there any possibility of creating the "Bind to local ip Address" option per domain?
would be great, in a multi domain domains and IP's makes all sense,