Hi, everyone.
I have received several messages returned as rejected that were sent by my Mailman server as the 1st of the month subscription reminder.
These messages contain a technical explanation about the reason for their rejection I don't understand but it seems to me it has something to do with the way the messages are formatted. I received several of these messages from a total of nearly 350 members we host at this moment.
I won't post the messages and their entire content but just some of the reasons for their rejection. Here they are:
MESSAGE 1:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@epdot.com>: host mx1.megamailservers.com[216.251.32.71] said: 550 5.7.1 s01D0qcI004613 This message does not comply with required standards. (in reply to end of DATA command)
MESSAGE 2:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@me.com>: host mx6.me.com.akadns.net[17.158.8.114] said: 550 5.1.1 unknown or illegal alias: username@me.com (in reply to RCPT TO command)
MESSAGE 3:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@cgocable.ca>: host mx2.cgocable.ca[216.221.81.40] said: 550 #5.1.0 Address rejected. (in reply to RCPT TO command)
MESSAGE 4:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@msn.com>: host mx2.hotmail.com[65.55.92.168] said: 550 Requested action not taken: mailbox unavailable (in reply to RCPT TO command)
Do you have any idea as to why these messages have been returned and what I need to do to resolve this issue ?
Thank you in advance for your help.
Joe.
On 1/1/2014 3:28 PM, Joe wrote:
Hi, everyone.
I have received several messages returned as rejected that were sent by my Mailman server as the 1st of the month subscription reminder.
These messages contain a technical explanation about the reason for their rejection I don't understand but it seems to me it has something to do with the way the messages are formatted. I received several of these messages from a total of nearly 350 members we host at this moment.
I won't post the messages and their entire content but just some of the reasons for their rejection. Here they are:
MESSAGE 1:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@epdot.com>: host mx1.megamailservers.com[216.251.32.71] said: 550 5.7.1 s01D0qcI004613 This message does not comply with required standards. (in reply to end of DATA command)
MESSAGE 2:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@me.com>: host mx6.me.com.akadns.net[17.158.8.114] said: 550 5.1.1 unknown or illegal alias: username@me.com (in reply to RCPT TO command)
MESSAGE 3:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@cgocable.ca>: host mx2.cgocable.ca[216.221.81.40] said: 550 #5.1.0 Address rejected. (in reply to RCPT TO command)
MESSAGE 4:
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system<mail@msn.com>: host mx2.hotmail.com[65.55.92.168] said: 550 Requested action not taken: mailbox unavailable (in reply to RCPT TO command)
Do you have any idea as to why these messages have been returned and what I need to do to resolve this issue ?
Thank you in advance for your help.
Joe.
Message 1: This message does not comply with required standards.
I have no idea.
Message 2: <mail@me.com>: ... unknown or illegal alias: username@me.com
It appears that the e-mail alias table at the destination is bad. The e-mail alias "username" points to the mailbox "mail". Maybe that mailbox does not exist.
Message 3: Address rejected
The mailbox does not exist.
Message 4: mailbox unavailable
The mailbox does not exist.
--Barry Finkel
These three were stopped after RCPT, so the problem is not about content. Most likely the recipient address is not deliverable.
<mail@me.com>: host mx6.me.com.akadns.net[17.158.8.114] said: 550 5.1.1 unknown or illegal alias: username@me.com (in reply to RCPT TO command)
<mail@cgocable.ca>: host mx2.cgocable.ca[216.221.81.40] said: 550 #5.1.0 Address rejected. (in reply to RCPT TO command)
<mail@msn.com>: host mx2.hotmail.com[65.55.92.168] said: 550 Requested action not taken: mailbox unavailable (in reply to RCPT TO command)
The first one is the unusual case.
<mail@epdot.com>: host mx1.megamailservers.com[216.251.32.71] said: 550 5.7.1 s01D0qcI004613 This message does not comply with required standards. (in reply to end of DATA command)
I've never seen this error before.
Google "This message does not comply with required standards" to find a lot of people speculating about what it means, going back to 2006. They all relate it to Exchange or Outlook, but mx1.megamailservers.com says it is running Sendmail 8.13.6, and this is not a standard sendmail error message. So it's a custom filter on megamailservers.com.
Here's an example involving Mailman and megamailservers.com from 2007! <http://list.web.net/archives/getsmart-l/2007-December/002525.html> ... with complete message attached. I don't see anything wrong with it.
Joseph Brennan Columbia University IT
On 1/1/2014 4:33 PM, Joseph Brennan wrote:
These three were stopped after RCPT, so the problem is not about content. Most likely the recipient address is not deliverable.
<mail@me.com>: host mx6.me.com.akadns.net[17.158.8.114] said: 550 5.1.1 unknown or illegal alias: username@me.com (in reply to RCPT TO command)
<mail@cgocable.ca>: host mx2.cgocable.ca[216.221.81.40] said: 550 #5.1.0 Address rejected. (in reply to RCPT TO command)
<mail@msn.com>: host mx2.hotmail.com[65.55.92.168] said: 550 Requested action not taken: mailbox unavailable (in reply to RCPT TO command)
The first one is the unusual case.
<mail@epdot.com>: host mx1.megamailservers.com[216.251.32.71] said: 550 5.7.1 s01D0qcI004613 This message does not comply with required standards. (in reply to end of DATA command)
I've never seen this error before.
Google "This message does not comply with required standards" to find a lot of people speculating about what it means, going back to 2006. They all relate it to Exchange or Outlook, but mx1.megamailservers.com says it is running Sendmail 8.13.6, and this is not a standard sendmail error message. So it's a custom filter on megamailservers.com.
Here's an example involving Mailman and megamailservers.com from 2007! <http://list.web.net/archives/getsmart-l/2007-December/002525.html> ... with complete message attached. I don't see anything wrong with it.
Joseph Brennan Columbia University IT
I did a Google search, and it appears that the destination mailer found something objectionable with the mail (maybe a URL that it did not trust, or the mail was to be flagged as spam), so the destination mailer terminated the SMTP session with a fatal 5.7.1 error message. Most of the sites I saw were, as Joseph noted, from Outlook or Exchange users who were trying to blame MS, when it was the sending MS mailer that was reporting what the destination mailer reported during the SMTP dialog. There must be some anti-spam/malware software running on the destination mailer that is treating something in the mail as objectionable. If I remember the SMTP standard correctly, mail can be rejected during the DATA phase of the dialog.
In the other three examples, the sender sent the SMTP command
RCPT TO:<user@example.com>and the destination mailer rejected the mail at that point because the mailbox did not exist. It is always better to reject a mail message during the SMTP dialog because, once the mail has been received, it is harder to reject the mail and notify the sending system.
--Barry Finkel
participants (3)
-
Barry S. Finkel -
Joe -
Joseph Brennan