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Recent content by Greg Sims

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    Question Securing Email

    This was very helpful danami -- thank you. I also noticed that there are a number of access control from Postfix that can help: Postfix SMTP relay and access control . All the best, Greg
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    Question Securing Email

    We are having problems with email being sent from our server that is considered Spam. I am the only user running on the server which is being used for websites, sending subscription email via mailman and a few other admin emails from Cron and the like. We believe the Spam is a result of a Hack...
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    Resolved Port 25 SMTP Nessus Scan Report

    It is not possible for our to move to Plesk Onyx do to issues with mailman including PPPM-5476. Thank you for the Postfix configuration info UFHH01. Greg
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    Resolved Port 25 SMTP Nessus Scan Report

    We did a Nessus Scan of our server this evening. We have a couple of issues associated with port 25/tcp (smtp): 51192 - SSL Certificate Cannot Be Trusted 57582 - SSL Self-Signed Certificate We have a wildcard certificate for the primary domain loaded onto the server. It is used two places...
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    psa-pc-remote: Error during 'dd51-domainkeys' handler

    We received over 9,000 of these errors in our maillog this morning. The good news is the email is sent after the error. The bad news is our email logging does not match the reality of our outbound email traffic. We are sending many more emails than are being logged. We are missing a large...
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    Send from domain IP addresses and use domain names in SMTP greeting

    TITLE: Send from domain IP addresses and use domain names in SMTP greeting PRODUCT, VERSION, OPERATING SYSTEM, ARCHITECTURE: CentOS Linux 7.3.1611 (Core)‬ 12.5.30 Update #62 PROBLEM DESCRIPTION: We set the following option in Mail Settings at the server level: "Send from domain IP addresses and...
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    psa-pc-remote: Error during 'dd51-domainkeys' handler

    I interacted with a core developer of mailman. He said, I think that the issue is outbound mail from your lists cannot be DKIM signed because whatever is doing the DKIM signing is looking at the domain of the From: header as the domain to sign with and that domain is not known to the DKIM...
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    For the domain under study, this command yields the following: name = dd51-domainkeys type = sender-domain queue = before-remote This appears to be as expected. This seems to re-enforce asking Plesk developer to review the maillog data we have. Perhaps @IgorG can help -- please see the log...
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    I reviewed the mailman error logs -- per your suggestion. There are a hand full of unrelated errors over the last week that have to do with Robots hitting our Mailman lists -- this is not really an error, it is just informational. There is nothing in the mailman error logs that points to a...
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    psa-pc-remote: Error during 'dd51-domainkeys' handler

    TITLE: psa-pc-remote: Error during 'dd51-domainkeys' handler PRODUCT, VERSION, OPERATING SYSTEM, ARCHITECTURE: Plesk 12.5.30 Update #61 on CentOS 7 PROBLEM DESCRIPTION: We recently moved from RHEL 6/Plesk to the software stated above. We Did Not Use the migration tools provided in Plesk. We...
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    Hi UFHH01, I noticed that you marked this thread as "Resolved". When software places two records into /var/log/maillog for each email sent, the system is Screaming for Help. I can't imagine that we can consider this thread to be resolved. I've talked to the developers at mailman about this...
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    We restarted the server last night. We still have the same issue in the maillog. This seems to only happen for email sent by mailman. Is this a useful clue?
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    Key length is good using => https://protodave.com/tools/dkim-key-checker/ KEY LENGTH (BITS): 1024 VERSION: DKIM1 KEY TYPE: rsa Rebooting the server is a bit drastic. Perhaps we can try this when the load is load in the early morning. I sure wish there was another solution. What is this...
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    Issue psa-pc-remote: Error during 'dd51-domainkeys' handler

    I'm running: 12.5.30 Update #61 on CentOS 7 We are using mailman for a subscription mailing list under Plesk -- "enable mailing lists" is set with three subscription lists created. We turned on "Use DomainKeys spam protection system to sign outgoing email messages" for the domain last night...
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    Question SMTP greeting

    My definition of a "Bug" is when the design (in this case the Help Text) does not match the implementation (what actually happens in Plesk). When one changes from Send from domain IP addresses to Send from domain IP addresses and use domain names in SMTP greeting, what change in behavior...
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