These three were stopped after RCPT, so the problem is not about content.
Most likely the recipient address is not deliverable.
<[email protected]>: host mx6.me.com.akadns.net[17.158.8.114] said: 550
5.1.1 unknown or illegal alias: [email protected] (in reply to RCPT
TO command)
<[email protected]>: host mx2.cgocable.ca[216.221.81.40] said: 550 #5.1.0
Address rejected. (in reply to RCPT TO command)
<[email protected]>: 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.
<[email protected]>: 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
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