April 2026

This update mainly serves to improve stability.

The following changes will be rolled out successively and will be available soon.

Fixed bugs

33585 FlowGuard does not block emails if the user does not exist.

41878 Improve URL parsing for invalid handlers.

43182 The content filtering of the web portal can be bypassed.

44794 Encryption-only: Set "X-NoSpamProxy-Office365Identification" header for emails generated by NoSpamProxy.

45770 Large file status "Waiting for approval", but the file has already been removed.

47610 ECDH certificates do not work with NoSpamProxy Encryption.

47635 Some Office files are recognised as ZIP.

47722 Disclaimer takes a very long time for some email bodies in plain text.

47769 Decryption fails if the name of the certificate issuer contains an unassigned OID.

47828 The MIME type is incorrect after approving an attachment.

48122 Logging of errors in the event of failed processing of URL accesses.

48300 The process for resending the original e-mail is cancelled if there are multiple recipients.

48304 Problems uploading JPEG files under iOS.

48491 Email hint for locked file is missing if another file has been removed.

48904 Partner settings are not replicated if the name of the content filter set has changed.

48980 Image cannot be uploaded to the disclaimer.

49011 The MIME part of an email is incorrectly analysed as a nested message.

49082 Signature is not recognised by NoSpamProxy.

49104 Disclaimer: Images in the template are corrupted after updating the template.

49501 Error message for misclassification does not work.