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sorato.susanna@studenti.icstrebaseleghe.edu.it: host aspmx.l.google.com[74.125.142.26] said: 550-5.7.1 ATTENZIONE GLI STUDENTI NON SONO AUTORIZZATI AD INVIARE/RICEVERE POSTA 550 5.7.1 ALL'ESTERNO DEL DOMINIO ICSTREBASELEGHE.EDU.IT - gcdp 41be03b00d2f7-7c697ac38f7si4109880a12.591 - gsmtp (in reply to end of DATA command)