Seeing this over and over again in the SmarterMail Certificates Logs
[2024.03.23] Error: Cannot add duplicate collection entry of type 'binding' with combined key attributes 'protocol, bindingInformation' respectively set to 'https, *:443:mail.mydomain.com'
[2024.03.23] at Microsoft.Web.Administration.Interop.IAppHostElementCollection.AddElement(IAppHostElement pElement, Int32 cPosition)
[2024.03.23] at Microsoft.Web.Administration.ConfigurationElementCollectionBase`1.Add(T element)
[2024.03.23] at Microsoft.Web.Administration.BindingCollection.Add(Binding binding)
[2024.03.23] at SmarterMail.Common.SslCertificates.AcmeIntegration.LoadCertificateIntoIIS(Byte[] pfxBytes, String hostname, String ccsPassword, String& bindingError)
[2024.03.23] 13:36:20.629 ACME: Could not bind generated cert for smartermail.mydomain.com into IIS. You will need to do this by hand. Error was: System.Runtime.InteropServices.COMException (0x800700B7): Filename:
[2024.03.23] Error: Cannot add duplicate collection entry of type 'binding' with combined key attributes 'protocol, bindingInformation' respectively set to 'https, *:443:smartermail.mydomain.com'
[2024.03.23] at Microsoft.Web.Administration.Interop.IAppHostElementCollection.AddElement(IAppHostElement pElement, Int32 cPosition)
[2024.03.23] at Microsoft.Web.Administration.ConfigurationElementCollectionBase`1.Add(T element)
[2024.03.23] at Microsoft.Web.Administration.BindingCollection.Add(Binding binding)
[2024.03.23] at SmarterMail.Common.SslCertificates.AcmeIntegration.LoadCertificateIntoIIS(Byte[] pfxBytes, String hostname, String ccsPassword, String& bindingError)
[2024.03.23] 13:36:20.746 ACME: Could not bind generated cert for webmail.mydomain.com into IIS. You will need to do this by hand. Error was: System.Runtime.InteropServices.COMException (0x800700B7): Filename:
[2024.03.23] Error: Cannot add duplicate collection entry of type 'binding' with combined key attributes 'protocol, bindingInformation' respectively set to 'https, *:443:webmail.mydomain.com'
[2024.03.23] at Microsoft.Web.Administration.Interop.IAppHostElementCollection.AddElement(IAppHostElement pElement, Int32 cPosition)
[2024.03.23] at Microsoft.Web.Administration.ConfigurationElementCollectionBase`1.Add(T element)
[2024.03.23] at Microsoft.Web.Administration.BindingCollection.Add(Binding binding)
[2024.03.23] at SmarterMail.Common.SslCertificates.AcmeIntegration.LoadCertificateIntoIIS(Byte[] pfxBytes, String hostname, String ccsPassword, String& bindingError)
[2024.03.23] 13:36:27.703 [194.169.175.17][47421698] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:36:30.325 [13.111.21.195][3467076] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:36:30.573 [13.111.115.217][61221883] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:36:36.900 [194.169.175.10][6987809] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:37:00.515 [194.169.175.17][13160666] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:37:23.110 [205.201.135.150][38766200] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:37:28.552 [13.111.143.43][35313863] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:37:31.471 [13.111.115.209][44117149] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
[2024.03.23] 13:37:34.345 [194.169.175.17][10563405] SNI using fallback binding certificate mail.mydomain.com.pfx for (no hostname passed to SNI).
I've checked for duplicates in the IIS applicationHosts.config file and there isn't anything there.
That's what online fixes point at.
Any ideas ????
At first inbound email wasn't working, I went in and bound the certs manually to the SmarterMail site and then inbound mail started working, but still getting the above messages.