Same problem here, running latest Version 10.2.2.75.0
Mails composed using the Axigen Webmail in HTML are not displayed on major webmail portals or even blocked by some Mailserver, most likely because of „wrong“ MIME encoding.
Plaintext message work without problem with the same receipients when composed as plaintext on the Axigen Webmail.
Any update/workarounds on this issue?
Edit: we are using an evaluation license which adds a footer to all outgoing emails. Might this be the reason for the problem?
UPDATE:
The problem indeed only exists when using an evaluation license, most likely because of the “forced” footer that is being added in the evaluation version.