We have an internal help desk app that needs to use POP3 to send acknowledgements. Everything worked fine with the previous Exchange 2010 server, but I am getting "Connection reset" from the help desk app and unexpected terminations (0x800CCC0F) from an Outlook Express client I am using to test this scenario.
The two POP3 services: the Microsoft Exchange POP3 service and the Microsoft Exchange POP3 Backend services are running.
My Test-PpoConnectivity returns this:
RunspaceId : 4d16307d-e2e0-4a98-b69d-f05d1a778351
Name : 1
ProtocolName : POP3
MaxCommandSize : 512
MessageRetrievalSortOrder : Ascending
UnencryptedOrTLSBindings : {0.0.0.0:110, [::]:110}
SSLBindings : {0.0.0.0:995, [::]:995}
InternalConnectionSettings : {Mail.WTI.LOCAL:995:SSL, Mail.WTI.LOCAL:110:TLS}
ExternalConnectionSettings : {}
X509CertificateName : Mail
Banner : The Microsoft Exchange POP3 service is ready.
LoginType : PlainTextLogin
AuthenticatedConnectionTimeout : 00:30:00
PreAuthenticatedConnectionTimeout : 00:01:00
MaxConnections : 2147483647
MaxConnectionFromSingleIP : 2147483647
MaxConnectionsPerUser : 16
MessageRetrievalMimeFormat : BestBodyFormat
ProxyTargetPort : 9955
CalendarItemRetrievalOption : iCalendar
OwaServerUrl :
EnableExactRFC822Size : False
LiveIdBasicAuthReplacement : False
SuppressReadReceipt : False
ProtocolLogEnabled : False
EnforceCertificateErrors : False
LogFileLocation : C:\Program Files\Microsoft\Exchange Server\V15\Lo
LogFileRollOverSettings : Daily
LogPerFileSizeQuota : 0 B (0 bytes)
ExtendedProtectionPolicy : None
EnableGSSAPIAndNTLMAuth : True
Server : MAIL
I need some help regarding what might be wrong.
Thanks!