Emails blocked containing a specific word

[Jasper2111]

Accidentally, I discovered a very strange bug. When an email send to me contains the word "gespecialiseerd" (Dutch, it means specialised), the email is not received, not even in spam folder. Does anyone know what could be the problem?

Edit: apparantly, everything containing "cialis" is blocked, but for some reason not send to spam, but can nowhere be found. Anyone else that has this problem or knows how to solve this?

[rm13]

This sounds like a SMTP server spam filter. Very common for email providers to block filter those keywords.

Nothing to do with Roundcube.