Hello, I see following lines in my log (pasted below). What do these errors mean? Is somebody sending garbage characters to my server?
postfix/trivial-rewrite[5179]: warning: midna_domain_to_ascii_create: Problem translating domain "اختبار-ا٠ÙبÙÙ -ا٠عا٠٠Ù.شبÙØ©" to ASCII form: UIDNA_ERROR_DISALLOWED postfix:25/smtpd[5177]: warning: Illegal address syntax from testo.tel[52.39.45.118] in MAIL command: <john@اختبار-ا٠ÙبÙÙ -ا٠عا٠٠Ù.شبÙØ©> postfix:25/smtpd[5177]: disconnect from testo.tel[52.39.45.118] ehlo=1 mail=0/1 quit=1 commands=2/3