hi, i have a user that received a delivery failure report when he sent an email to an external email address and points “553 sorry, your envelope sender has been denied (#5.7.1)” error as the cause. I tried to do a test email to that email address and got the same error message. Could anyone give me an explanation on why this happened?
Subject: 553 sorry, your envelope sender has been denied (#5.7.1)
Because the recipients smtp server has rules from which domains he accepts or rejects emails.And you are not on the accept list.
Maybe he has misconfigured his server, then you should inform him, that he changes the rules.
Andreas Hoster
Subject: 553 sorry, your envelope sender has been denied (#5.7.1)
Hi there,
Does the error come from your servers or from an external source?
From what I’ve seen, enveloping can be used to forward mail on to a user at a different address. At least, that’s how I’ve seen it on my mail forwarding accounts. If I send an email to “me@somedomain.com”, it is enveloped to “me@home.com” and so get’s delivered to my home account, yet still appears to me as somedomain.com.
However, this is only how I understand it - I’ve never looked up how it works/ an explanation of enveloping and I could be totally wrong!!!
Perhaps the user has some mail forwarding somewhere which isn’t set up properly?
Craig.
Subject: RE: 553 sorry, your envelope sender has been denied (#5.7.1)
All email sent via SMTP has an “envelope”.
When an SMTP server connects to another, it begins a conversation with a HELO/EHLO command. Next, typically, the client/sender issues a MAIL FROM command, which becomes the “envelope sender” of the message. RCPT TO commands are issued to define recipients, and the DATA stage is when the message body is transfered. (This is all simplified).
Anyway, to have your “Envelope sender” rejected means that the communication was rejected based on who you claimed to be in your MAIL FROM. Also, this could just be the error thrown when relaying is denied for another reason (didn’t like your HELO, your IP isn’t acceptable to the recieving server, etc.)
Likely the reciever is using some blocklist, and your IP is on it, or else they’re really blocking by envelope sender and that address/it’s domain is blacklisted (or not whitelisted, depending on configuration).
-John
Subject: 5.7.1 = local security policy
there should be more text after the code for humans to understand why it was rejected, otherwise you’ll need to do as the others have suggested and contact the recipient (via another email address) and ask why.