sven juergensen kielnet hrikqefpomckielnetde martin schmitt schmitt systems wrote saying clients using smtp relay send spam cant nail actually problem customerowned zombiehosts bombarding mailservers waves spam causing insomnia admins every permitted fire towards port 25 using everything got course im temporarily prohibiting send anything port 25 get unblocked suggesting systems uncompromised many times pop thats problem customers able send email freely putting restrictions collateral damage innocent customers able send email contacting admins emailproviders filling antiblacklist forms etc pp doesnt affect systems email experience customers due random people putting useless bytes wire smtpauth question dont really fancy idea anvil scenario whats left work martin sven03 mit freundlichen gruessen sven juergensen fachbereich informationstechnologie kielnet gmbh gesellschaft fuer kommunikation preusserstr 19 24105 kiel telefon 0431 2219053 telefax 0431 2219005 email hrikqefpomckielnetde internet httpwwwkielnetde 25295 key fingerprint 65b6 90fc 010a 39ce dca5 336d 9c45 3b7a b02d e132 geschaeftsfuehrer eberhard schmidt hrb 4499 amtsgericht kiel fri 08 aug 2008 055401 0100 rfcignorant