> On 01/11/2013 04:36 PM, tovis wrote: >> I'm using exim4 configured with "smart host" on Debian Squeeze. >> Also I have fetchmail, courier IMAP and apache2, php5, squirrelmail >> combo >> for mailing (I have several two booting boxes with win and linux - it >> was >> the easiest way to have mailing infrastructure for both systems). For >> long >> time I have no pőropblems, but now I have got several error messages >> from >> my "smart host": >> Header (as it shown in Squirrelmail): >> Return-path: <> >> Envelope-to: [email protected] >> Delivery-date: Wed, 09 Jan 2013 10:30:40 +0100 >> Received: from Debian-exim by samu.bubu.dyndns.ws with local (Exim 4.63) >> id 1Tsrzc-0001Lv-DR >> for [email protected]; Wed, 09 Jan 2013 10:30:40 >> +0100 >> Auto-Submitted: auto-replied >> From: Mail Delivery System <[email protected]> >> To: [email protected] >> Subject: Message frozen >> Message-Id: <[email protected]> >> Date: Wed, 09 Jan 2013 10:30:40 +0100 >> >> Message (as it shown in Squirrelmail): >> Message 1Tsrzb-0001Ls-U7 has been frozen (delivery error message). >> The sender is <>. >> >> The following address(es) have yet to be delivered: >> [email protected]: SMTP error from remote mail server after MAIL >> FROM:<> >> SIZE=2673: host smtp.upcmail.hu [213.46.255.2]: 550 5.1.0 <> sender >> rejected >> >> I think these emails are reading confirmation. >> I think, that problem is "Return path" and "sender" fields are empty. >> It could be solved by exim4 configuration? It could be the problem of >> exim4? I'm not sure :( >> Any help? > > Is smtp.upcmail.hu you, or under your control? Is it your smart-host? > It looks like it's trying to deliver an empty-sender mail to "bigfirm.hu". > > What's the relationship with your "dyndns.ws" address; why did it send > this > notification there? > > Can you find out why the empty-sender mail was produced? They're > legitimate for > Delivery Status Notifications (DSNs), of which one class is a "bounce" > (that is, a notification > of failure to deliver). > Have a look at your logs. > > It could just be that "bigfirm" are clueless, in rejecting all DSNs. > > It could, at the same time, be that some spammer faked a "bigfirm" sender > address, and you accepted the spam and only later decided you couldn't > deliver it, so you generated a bounce. This is legal per the mail > protocol > standards, but suboptimal in a spam-filled world. If so you need to work > harder at spotting and rejecting spam during the SMTP conversation. > > -- > Cheers, > Jeremy > > Thanks for answer Jeremy! smtp.upcmail.hu is my smart host (UCP is my internet provider to). I only suspect, that those are "reading confirmation". When sender is asking for it, yout open the mail, and send a confirmation - this is clalled Delivery Status Notifications (DSNs)? You right, it is only a suspect, because some of my contacts said that they would not got confirmation from me. But for years our email addresses where used for spam - I've got several times offer for job from myself :) I do not know where emails with empty sender are created. I'm use squirrelmail as MUA and exim4 as MTA. I do not see how does it work, and where sender is became empty (even I do not understand why exim4 is transferring these emails, I thought it is restricted by default). The first question, could exim4 deliver such an email?
Sincerely tovis -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
