EFA rejects Amazon emails

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Goppi
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Joined: 28 Jan 2014 21:31

EFA rejects Amazon emails

Post by Goppi » 22 Aug 2015 20:51

amazon receives the error 450 4.1.8 xxx@marketplace.amazon.co.uk Sender address rejected: Domain not found.

I can't see the emails in Mailwatch though. I added the domain to the whitelist, but am still not receiving their emails. I guess it's blocked before it reaches the Spam/Virus filter. How can I configure the EFA to allow emails from amazon.co.uk regardless of subdomains?

Thanks,
Goppi

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shawniverson
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Joined: 13 Jan 2014 23:30
Location: Indianapolis, Indiana USA
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Re: EFA rejects Amazon emails

Post by shawniverson » 23 Aug 2015 10:12

Postfix is rejecting "marketplace.amazon.co.uk" because it doesn't resolve in DNS.

Code: Select all

smtpd_sender_restrictions = permit_sasl_authenticated, check_sender_access hash:/etc/postfix/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain
You can remove "reject_unknown_sender_domain" and restart postfix, but be aware this may lead to an increase in spam received from unknown domains.
Version eFa 4.0.2 now available!

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pdwalker
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Joined: 18 Mar 2015 09:16

Re: EFA rejects Amazon emails

Post by pdwalker » 25 Aug 2015 07:23

As Shawn says.

The problem is the domain marketplace.amazon.co.uk which doesn't resolve in DNS.

If the email is legitimate, then Amazon has a configuration problem - either the domain should resolve to something, or they should rewrite their sending domain to something valid.

If the email is junk, then it is correctly rejected.

If the email really is legitimate, and you don't want to change the postfix rule rejecting unresolvable domains, then you could use a local DNS resolver to "handle" this domain locally. (e.g. override the worldwide DNS and resolve it to an internal address) to keep postfix happy

DaN
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Location: Earth

Re: EFA rejects Amazon emails

Post by DaN » 25 Aug 2015 07:47

If the email really is legitimate, and you don't want to change the postfix rule rejecting unresolvable domains, then you could use a local DNS resolver to "handle" this domain locally. (e.g. override the worldwide DNS and resolve it to an internal address) to keep postfix happy
.. or he could write Amazon an mail. So they can remedy the deficiency.

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pdwalker
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Re: EFA rejects Amazon emails

Post by pdwalker » 25 Aug 2015 08:14

that would be the most sensible option, assuming someone sensible at Amazon can be contacted.

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