Problem with email sent with PGP encryption - plain text / tnef


  • I have a small problem when sending email signed and encrypted with PGP, all recipients receive a att.00001 with nothing inside  and att00002.bin file that when opened with notepad shows the -----BEGIN PGP MESSAGE-----. Exchange just refuses to send in plain text format. TNEF enable is set to false, aslo I try and do disable, delete and recreate Front end connector , disabled all exchange spam filters. doesn't matter if the receiver uses Exchange or not , the email is delivered in the same way with attachments

    When email is sent in clear with no encryption, it behaves just fine 

    Using winserver2012 + Exchange 2013 + Blackberry Enterprise 12.

    I have no more ideas.

    [PS] C:\Windows>get-remotedomain | fl
    RunspaceId                           : b68c71e0-7c14-4a41-9f58-0ec819205
    DomainName                           : *
    IsInternal                           : False
    TargetDeliveryDomain                 : False
    ByteEncoderTypeFor7BitCharsets       : Undefined
    CharacterSet                         : iso-8859-1
    NonMimeCharacterSet                  : iso-8859-1
    AllowedOOFType                       : External
    AutoReplyEnabled                     : False
    AutoForwardEnabled                   : False
    DeliveryReportEnabled                : True
    NDREnabled                           : True
    MeetingForwardNotificationEnabled    : False
    ContentType                          : MimeHtmlText
    DisplaySenderName                    : True
    PreferredInternetCodePageForShiftJis : Undefined
    RequiredCharsetCoverage              :
    TNEFEnabled                          : False
    LineWrapSize                         : Unlimited
    TrustedMailOutboundEnabled           : False
    TrustedMailInboundEnabled            : False
    UseSimpleDisplayName                 : False
    NDRDiagnosticInfoEnabled             : True
    MessageCountThreshold                : 2147483647
    AdminDisplayName                     :
    ExchangeVersion                      : 0.1 (8.0.535.0)
    Name                                 : Default
    DistinguishedName                    : CN=Default,CN=Internet Message Fo
    Identity                             : Default
    Guid                                 : da633723-7b11-42cb-abad-bb403b21a
    ObjectCategory                       :
    ObjectClass                          : {top, msExchDomainContentConfig}
    WhenChanged                          : 8/29/2016 9:02:07 PM
    WhenCreated                          : 6/9/2016 2:04:08 AM
    WhenChangedUTC                       : 8/29/2016 6:02:07 PM
    WhenCreatedUTC                       : 6/8/2016 11:04:08 PM
    OrganizationId                       :
    OriginatingServer                    :
    IsValid                              : True
    ObjectState                          : Unchanged

    Tuesday, August 30, 2016 11:31 AM


  • Hi,

    Since this issue only occur if enable PGP encrypt, I recommend check the configuration in PGP server.

    However, I not familiar with it and don't provide from Microsoft, I recommend contact application provider for further assistance.

    Allen Wang
    TechNet Community Support

    Please remember to mark the replies as an answers if they help and unmark them if they provide no help.
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    Wednesday, August 31, 2016 9:40 AM