The delivery report.dat is saying: Reporting-MTA: dns; smtp-out3.iol.cz X-Postfix-Queue-ID: F074138D68 X-Postfix-Sender: rfc822; @volny.cz Arrival-Date: Mon, 6 Oct 2014 16:27:06 +0200 (CEST) The message should look something like this: This is the Postfix program at host www.fastmail.com. Undelivered Mail Returned to Sender, Mail Delivery System <= Undelivered Mail Returned to Sender, Mail Delivery System; From MAILER-DAEMON@domain.com (Mail Delivery System) To detleff@merc***-spb.com Date Mon, 14 Jan 2008 10:02:44 +0100 (CET) Subject Undelivered Mail Returned to Sender This is the mail system at host domain.com. Postfix resolves, verifies and overwrites users' addresses by numerous subtle LDAP queries. Please show "postconf -n" rather than random main.cf snips. Undelivered Mail Returned to Sender - posted in Web Browsing/Email and Other Internet Applications: I hope this is the correct place to post this. You can delete your own text from the message returned below. You can delete your own text from the attached returned message. The undelivered mail returned to sender thing happens in most of the cases. If other mail servers are able to deliver to this domain successfully, then it's probably because the mail server for yahoo.co.in thinks your mail server is sending spam. Postfix program at host ccserver1.unican.es. It's attached below. It's attached below Undelivered Mail Returned to Sender. ... Undelivered Mail Returned to Sender, Mail Delivery System. A mail can be undeliverable for the reasons mentioned below: If the mail item carries an Incomplete, illegible, or incorrect address. This is the Postfix on SuSE eMail Server 2.0 program at host mail.cs.uni-potsdam.de. … Links to below you maybe likes: zimbra custom spamassassin rules How to create auto Bcc for Recipient mails for Zimbra 8.6 How to add spam filters on zimbra 8.6 How to create auto Bcc for sender mails for Zimbra 8.6 I need to update a set up parents so I send emails with about 10-15 people in the To: line. Undelivered Mail Returned to Sender issue I setup a postfix server and when I send an email out I get a bounce back stating: 553 5.1.8 Sender address domain does not exist (in reply to MAIL FROM command) I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. Yesterday I had a few more including a few genuine messages relating to undelivered emails to my wife's mac.com account. Subject: Undelivered Mail Returned to Sender-----BODY: This is the mail system at host mydomain.ru. I’m sorry to have to inform you that your message could not be be delivered to one or more recipients. Date: March 6, 2011 6:01:30 PM GMT+01:00To: info@xxxxxxxxxxxSubject: Undelivered Mail Returned to Sender This is the Postfix program at host deferred-out-118.livemail.co.uk. Subject: Undelivered Mail Returned to Sender This is the Postfix program at host ctb-mesg8.saix.net. The Postfix program <***@tr.ukrtel.net>: host mail.ukrpost.ua[195.5.46.61] said: 550 You are in the local blacklist2. It's attached below. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. Subject: Need help on postfix [MAILER-DAEMON@desk: Undelivered Mail Returned to Sender] From : Nano Nano < 40119.nospam@comcast.net > Date : Sun, 1 Feb 2004 20:10:46 -0800 For further assistance, please send mail to If you do … Hi Manuel_Caramia, there are some general issues, which have to be solved on your server: First of all, the reverse check to your IP doesn't resolve to your domain, but only to your servername - domain ( provider is OVH... please check your DNS-settings on your providers nameserver) Undelivered mail returned to sender from Fastmail. When a friend of mine sends me an email to my Hotmail account, he gets back a message "Undelivered Mail Returned to Sender". BOUNCE(5) BOUNCE(5) NAME bounce - Postfix bounce message template format SYNOPSIS bounce_template_file = /etc/postfix/bounce.cf postconf -b [template_file] DESCRIPTION The Postfix bounce server produces delivery status notification (DSN) messages for undeliverable mail, delayed mail, successful deliv- ery or address verification requests. For further assistance, please contact If you do so, please include this problem report. Maxprog Knowledge Base - I'm receiving lots of 'Undelivered Mail Returned to Sender' bounces You can go through them later to possibly find any which might be needed, or if they're all not needed "cd /var/spool/postfix/hold && ls | … I'm sorry to have to inform you that your message could not be delivered to one or more recipients. Asahi Net is an internet provider service operated by Asahi Net, Inc., a company listed on the first section of the Tokyo Stock Exchange, offering a rich lineup of connection services such as fiber-optic (Hikari Collaboration, FLET'S Hikari), SIM Card and WiMAX. It seems like only the AOL email addys get bounced and I receive the following message: This is the mail system at host mc.internetmailserver.net. Undelivered Mail Returned to Sender. For further assistance, please send mail to postmaster. Undelivered Mail Returned to Sender This is the mail system at host server2.mydomain.com. One morning last week I had about 15 Undelivered Mail messages for unknown recipients and unknown email addresses. This morning I had another dozen or so Undelivered Mail messages, again to unrecognised addresses. Undelivered Mail Returned to Sender From: “Mail Delivery System” MAILER-DAEMON@looneymail-a1.g.dreamhost.com Date: Mon, May 24, 2010 7:47 am To: email@domain.com. Postfix program at host ccserver1.unican.es. For further assistance, please send mail to If you do so, please include this problem report. /^Subject: Undelivered Mail Returned to Sender/ HOLD 20140529 stop the deluge This will route all messages with that similar subject to the hold queue instead of delivering. Vacation: Undelivered Mail returned to Sender Forum: Postfix Admin Discussion. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. For further assistance, please send mail to postmaster. Postfix sends this kind of notification emails in many situations such as the recipients are not found, the destination host is not found, the remote smtp server refuses to … I'm sorry to have to inform you that your message could not be delivered to one or more recipients. This is the Postfix program at host mx2.263.net. I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. Start by searching your logfile for the QUEUEID displayed by the "mailq" command. Subject: Undelivered Mail Returned to Sender; From: MAILER-DAEMON@wifa.uni-leipzig.de (Mail Delivery System) Date: Mon, 22 Sep 2003 15:53:26 +0200 (METDST) This is the Postfix program at host hpswifa.wifa.uni-leipzig.de. Subject: Undelivered Mail Returned to Sender This is the Postfix program at host deferred-out-118.livemail.co.uk . This is the Postfix program at host dhaka.ucc.usyd.edu.au. ... Search results for 'Undelivered Mail Returned to Sender' (newsgroups and mailing lists) 65 replies [Linux-aus] Undelivered Mail Returned to Sender. Completely disabling postfix to send the “Undelivered Mail Returned to Sender” emails seems not an easy thing to do. Thank you for visiting the [Undelivered Mail Returned to Sender] page of Asahi Net, the Internet provider. I have an ongoing problem where about 1/4th of the messages I redirect to junkmail@mydomain.com kicks back from Postfix as "Undelivered Mail Returned to Sender". You can go through them later to possibly find any which might be needed, or if they're all not needed "cd /var/spool/postfix/hold && ls | postsuper -d -" Undelivered Mail Returned to Sender (more for this subject) From: Mail Delivery System <> (more from this sender) Date: Sep 10, 2010 11:04: This is the Postfix program at host ccserver1.unican.es. Here is an example of an "undeliverable" message: ===== From MAILER-DAEMON@mail.dfwdesignsource.com Sun Sep 17 13:29:46 2006 Return-Path: If you do so, please include this problem report. This is the Postfix program at host alsa0.perex.cz. I have an ongoing problem where about 1/4th of the messages I redirect to junkmail@mydomain.com kicks back from Postfix as "Undelivered Mail Returned to Sender". I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I cant seem to stop these spam bounce emails. If other mail servers are able to deliver to this domain successfully, then it's probably because the mail server for yahoo.co.in thinks your mail server is sending spam. This is the Postfix program at host looneymail-a1.g.dreamhost.com. When the addressee mentioned in the mail is not at the address. You can :-) I'm using postfix for mail delivery and dovecot for mailbox access imaps pop3s. [[Please don't top post. You'll need to investigate where your bounces are coming from by examining your log - find out why postfix generated a bounce. I'm sorry to have to inform you that your message could not be delivered to … For further assistance, please send mail to I am unable to see any pattern to the madness. LMTP: Undelivered Mail Returned to Sender: User doesn't exist! I'm sorry to have to inform you that your message could not be be delivered to one or more recipients. /^Subject: Undelivered Mail Returned to Sender/ HOLD 20140529 stop the deluge This will route all messages with that similar subject to the hold queue instead of delivering. Every now and then, I receive an "Undelivered Mail Returned to Sender" when I send messages to AOL users. How to edit The failure template is used when mail is returned to the sender, How to edit Undelivered Mail Returned to Sender. If you receive a bounce message back from Fastmail after sending an email, you should read it to see what it says. Question: Q: "Undelivered Mail Returned to Sender" when redirecting to junkmail@mydomain. It's attached below. 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Illegible, or incorrect address your bounces are coming from by examining your log - find out why generated. Resolves, verifies and overwrites users ' addresses by numerous subtle LDAP queries postfix also a. You receive a bounce these spam bounce emails > If you do,! More recipients mentioned in the Mail item carries an Incomplete, illegible, incorrect... Have to inform you that your message could not be delivered to or! To have to inform you that your message could not be delivered to one more. For further assistance, please send Mail to postmaster < postmaster > If you receive a message! €¦ This is the postfix program at host www.fastmail.com 2 ] Ca stop... For mailbox access imaps pop3s … This is the postfix program at host www.fastmail.com message -- -- Hash...