Im just wondering why you dont want to allow null senders (<>)? At 01:16 PM 2/27/2003 -0500, you wrote:
>Forgive me for the length of this... > >Here's some clarification to the problem I'm having, and >what I had to do to fix it. My actions are temporary, >because I care more about stopping UCE than I do about the >RFC that requires you to accept envelopes with mail from:<> > >I appreciate all your comments/suggestions. They inspired me >to do something I always tell my employees and friends to >do: Check your logs! > >I was already closely monitoring the postfix logs. It seems >like I spend a lot of time doing that every day. What I >neglected to do was look at my iMail logs, so I could see >what was happening between the two boxes, if anything. > >My mx record for my domains point to the address of the >postfix box. So when an undeliverable envelope leaves >postfix, and gets returned for any reason, it returns to >postfix. Then it's postfix's job to send the bounce back to >the end-user (iMail account). Postfix is doing it's job in >this situation, but it's sending a bounce message back to >iMail with a null sender address (mail from:<>). I don't know >why postfix is doing this. I'm sure I have a directive in my >main.cf that's causing this, but I have yet to find it. > >I composed an email that looked like this originally... > >mail from:<[EMAIL PROTECTED]> >rcpt to:<[EMAIL PROTECTED]> >etc, etc, etc > >...and I sent it through postfix(spamstopper). The situation >would look very similar if I were using iMail as my smtp >server in my email client, or if i were sending to an >external domain through either one of my servers. My users >send through iMail, which forwards it to postfix using the >Gate Host directive. I've tried it each way, but I'm only >showing you this way: > >Feb 27 10:05:11 spamstopper postfix/smtpd[23451]: connect from >neo-jackson.neosmart.neosmart.com[192.168.1.69] >Feb 27 10:05:11 spamstopper postfix/smtpd[23451]: 48EAD167D5: >client=neo-jackson.neosmart.neosmart.com[192.168.1.69] >Feb 27 10:05:11 spamstopper postfix/cleanup[23441]: 48EAD167D5: >message-id=<[EMAIL PROTECTED]> >Feb 27 10:05:11 spamstopper postfix/smtpd[23451]: disconnect from >neo-jackson.neosmart.neosmart.com[192.168.1.69] >Feb 27 10:05:11 spamstopper postfix/qmgr[23431]: 48EAD167D5: >from=<[EMAIL PROTECTED]>, size=676, nrcpt=1 (queue active) >Feb 27 10:05:11 spamstopper postfix/smtp[23434]: 48EAD167D5: >to=<[EMAIL PROTECTED]>, relay=63.144.217.11[63.144.217.11], >delay=0, status=bounced (host 63.144.217.11[63.144.217.11] said: 550 >unknown user <[EMAIL PROTECTED]>) >Feb 27 10:05:11 spamstopper postfix/cleanup[23450]: BFD6C167E9: >message-id=<[EMAIL PROTECTED]> >Feb 27 10:05:11 spamstopper postfix/qmgr[23431]: BFD6C167E9: from=<>, >size=2466, nrcpt=1 (queue active) >Feb 27 10:05:12 spamstopper postfix/smtp[23445]: BFD6C167E9: >to=<[EMAIL PROTECTED]>, relay=63.144.217.11[63.144.217.11], delay=1, >status=sent (250 Message queued) > >20030227 100511 127.0.0.1 SMTPD (38AF0086) [63.144.217.11] connect >63.144.217.68 port 51576 >20030227 100511 127.0.0.1 SMTPD (38AF0086) [63.144.217.68] EHLO >spamstopper.neotechus.com >20030227 100511 127.0.0.1 SMTPD (38AF0086) [63.144.217.68] MAIL >FROM:<[EMAIL PROTECTED]> >20030227 100511 127.0.0.1 SMTPD (38AF0086) [63.144.217.68] RCPT >TO:<[EMAIL PROTECTED]> >20030227 100511 127.0.0.1 SMTPD (38AF0086) [63.144.217.68] ERR >mail.neosmart.com invalid user <[EMAIL PROTECTED] 100500 >20030227 100511 127.0.0.1 SMTPD (38B00086) [63.144.217.11] connect >63.144.217.68 port 51577 >20030227 100511 127.0.0.1 SMTPD (38B00086) [63.144.217.68] EHLO >spamstopper.neotechus.com >20030227 100511 127.0.0.1 SMTPD (38B00086) [63.144.217.68] MAIL FROM:<> >20030227 100511 127.0.0.1 SMTPD (38B00086) [63.144.217.68] RCPT >TO:<[EMAIL PROTECTED]> >20030227 100511 127.0.0.1 SMTPD (38B00086) [63.144.217.68] >D:\IMail\spool\D247f38b000869751.SMD 2623 >20030227 100512 127.0.0.1 SMTP (8604) processing >D:\IMail\spool\Q247f38b000869751.SMD >20030227 100512 127.0.0.1 SMTP (8604) ldeliver mail.neotechus.com >jaxn-main (1) 2623 >20030227 100512 127.0.0.1 SMTP (8604) finished >D:\IMail\spool\Q247f38b000869751.SMD status=1 > > >Changing the directive in iMail to allow NULL senders seems >to have fixed this problem. I don't see that as a solution, >because I don't want to accept mail from NULL senders. Could >someone please help me figure out why postfix doesn't give a >valid mail from? When I look at the actual bounce message I >get back from iMail, it looks like there is a valid email >address in the mail from field. I've come to the conclusion >that iMail must append this. The mail from in the header shows >[EMAIL PROTECTED] but the logs show >that there is nothing in the mail from field. > > >Any ideas? > >Thanks, >Jackson > > > > > At 04:48 PM 2/26/2003 -0600, Len Conrad wrote: > > > > >mailer-daemon: postmaster > > >postmaster: root > > ># Person who should get root's mail > > >#root: someuser > > > >no, MTAs bounce to the envelope sender and the above aliases have nothing > >to with envelope sender > > > >alias table is used for resolving [EMAIL PROTECTED] (aka localhost) > > > >the bounces go to [EMAIL PROTECTED] Keith J. 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