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Assuming that you have set up SPF, DKIM, rDNS and that you are not blacklisted, your only options is Microsoft Smart Network Data Services. No kidding. That is official MS's program for registering responsible person (administrator) for IP address on which mail server runs. That way you can observe and review status of IP address of your mail server. MS ...


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Doing an ARIN lookup of your IP, it looks like it's coming from a provider that offers cloud hosting services. It seems pretty standard for Cloud hosting providers to get blacklisted simply because of how often IP addresses can change hands and how easy it is for instances to send Spam. Mail services end up black listing the entire hosting provider's block....


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The headers you posted don't really look like Hotmail Headers. Can you log into hotmail online not through thunderbird and grab the headers from the actual email. They normally contain all the codes to tell you why it's going to spam. I did check your IP at Symantec and it was clean (sometimes that's the culprit for Hotmail issues). You also might have a ...


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Let's break this down a little farther. I can send emails from ceo@yourcompany.com, all that's going to happen based on your SPF setting is that it's going to either "Fail it", "Softfail It", or treat it as a "Neutral" email based on your SPF Setting of -all,~all, ?all. I still sent the email as ceo@yourcompany.com, it might land in the inbox, it might land ...


3

There is no way to specify an individual email address with either DKIM or SPF. Recommended solutions: For low volumes have them connect to your mail server on the Submission port (587) and authenticate before sending. This is likely suitable for your situation. For larger volumes (marketing mail, mailing lists), create a dedicated sub-domain. Configure ...


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The signed header fields (the h-tag) in the DKIM signature is empty. According to the RFC 6376 it must however contain at least one header name. The recommended header fields to sign are described in section 5.4 of the RFC. Probably the DKIM_SIGN_HEADERS variable contains something invalid. dkim_sign_headers according to the Exim specification: ...


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It turns out I shouldn't have had the below enabled as well as a mis configuration in the DNS record pointed out by eranga dkim_sign_headers = DKIM_SIGN_HEADERS


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You can use the same key for multiple domains. Using different selectors for the same key won't help your reputation. It will also make signing more difficult. You can use the same selector for different keys as they will be published under different domains. You will need to publish the selector DNS record for each sending domain. Sign the outgoing ...


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I know this question is two months old, but it is a top Google search result for the subject so I figured it deserved an answer. I don't know what your second and third TXT entries are for. I have DKIM working properly now and I only have a TXT entry similar to your first one. I followed instructions from Digital Ocean when setting up DKIM on Ubuntu, but ...


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This works for me: DKIM_CANON = relaxed DKIM_SELECTOR = 20160604 DKIM_DOMAIN = ${lc:${domain:$h_from:}} DKIM_PRIVATE_KEY=${if exists{/etc/exim4/dkim/${dkim_domain}-private.pem} {/etc/exim4/dkim/${dkim_domain}-private.pem}} These settings must be placed in exim4.conf.template file if you use single file Exim configuration and not in 00_local_macros or ...


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Verify that that you are using the remote_smtp transport. This should be listed after T= in /var/log/exim4/mainlog on the lines containing =>. Checking DKIM on locally delivered email will not work as this transport is not used. Use a verification service to check whether your mail is signed. Verify the permissions on your private key. It must be ...


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If you turn on DKIM with AES and you have DKIM on your local and lets say your local server stamps a DKIM then Amazon will stamp a DKIM and you will have 2 DKIM signatures on your emails. (Which I seen a lot) Amazon will have their own DKIM Key, and you will have your own DKIM, and Gmail will have their own DKIM. A lot of people do what you're trying to do,...


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Instead of (or in addition to) SRS_EXCLUDE_DOMAINS you can dynamically exclude domains if you go this way: sender_canonical_maps = mysql:/etc/postfix/no-srs.cf,tcp:127.0.0.1:10001 recipient_canonical_maps = mysql:/etc/postfix/no-srs.cf, tcp:127.0.0.1:10002 I found this very useful information with more details and examples here: https://github.com/...



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