Limitations on creating email aliases?

Ma ha preguntado...
Hi all,
In the past I used to create alias in the form of Today, I wanted to create a new one and it said alias was invalid. After using a dash in the address it worked. Are there some new limitations on the creation of aliases? If yes, what are those limitations.
Thanks for any tips!

P.S. I'm sure that the alias is not already taken, as I tried various combinations.
Votos positivos | 1
Cyanolyca turcosa ecua4944
Urraca De Cuello Negro ha contestado...
closing this in favor of #6069
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