"invalid characters in email address" error

[nik.martin]

When setting up email forwarders in the DA user control panel, DA does not allow a + sign. This is a valid character in an email address, and allows for some very powerful features. For example, I want to forward email to [email protected] to my gmail account, so I set up a forwarder that forwards [email protected] to [email protected]. This allows me to organize my email based on where it originally came from.
Most SMTP servers know exactly what to do with plus signs, which is to ignore everything between the + and the @. The ones that don't are broken according to the RFC.