From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu Subject: Re: [9fans] smtpd From: erik quanstrom Date: Fri, 2 Nov 2007 09:38:20 -0400 In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Topicbox-Message-UUID: e657c152-ead2-11e9-9d60-3106f5b1d025 yes. i believe this bug was fixed. i had this problem, too. 9804261509.aa06201 gives a different error (Invalid address) than "unknown user". any local name with an invalid character will do this. i think you need to update /mail/lib/validatesender. here's my fix: #!/bin/rc mail -x $1 | grep -vs '^unknown user|^Invalid address' this fix is very important. without it, you can be an open spam relay. - erik > The following data is extracted from my /sys/log/smtpd and /sys/log/ > smtp. > > smtpd: > ar Oct 30 13:43:16 ehlo from 82.34.95.22 as > 82-34-95-22.cable.ubr05.gill.blueyonder.co.uk > ar Oct 30 13:43:26 [82-34-95-22.cable.ubr05.gill.blueyonder.co.uk/ > 82.34.95.22] fastcoco.com!kjeld sent 179 bytes to ar.aichi-u.ac.jp! > 9804261509.aa06201 > > smtp: > ar Oct 30 13:43:26 /dev/null sent 2623 bytes to kjeld@fastcoco.com > > The person who submitted the mail from > 82-34-95-22.cable.ubr05.gill.blueyonder.co.uk might not be > kjeld@fastcoco.com. > > I think it is better for smtpd to reject with message: 550 Requested > action not taken: mailbox unavailable > > Sorry if this is already fixed.