I have also had issues with mail delivery with the big email services. The best
ways I have found to improve delivery performance:
- DKIM and SPF
https://www.zoho.com/campaigns/help/setup-spf-dkim.html
<https://www.zoho.com/campaigns/help/setup-spf-dkim.html>
https://mandrill.zendesk.com/hc/en-us/articles/205582267-What-are-SPF-and-DKIM-and-how-do-I-set-them-up-
<https://mandrill.zendesk.com/hc/en-us/articles/205582267-What-are-SPF-and-DKIM-and-how-do-I-set-them-up->
- DMARC
- STARTTLS on port 25 for SMTP
- Proper TLS certificate chains
- reverse DNS for mail hostname
- properly set EHLO/HELO hostname
The HELO name is set in smtpserver.xml in 3.x in this XML block:
<!-- This is the name used by the server to identify itself in the SMTP
-->
<!-- protocol. If autodetect is TRUE, the server will discover its -->
<!-- own host name and use that in the protocol. If discovery fails,
-->
<!-- the value of 'localhost' is used. If autodetect is FALSE, James
-->
<!-- will use the specified value. -->
<!--
<helloName autodetect="true">myMailServer</helloName>
—>
Set the hostname in this configuration block to your mail server name.
> On Sep 24, 2015, at 11:37 PM, Marc Chamberlin <[email protected]> wrote:
>
> Thanks Jerry for taking the time to reply, much appreciated! I ran the tests
> at mail-tester.com and of course that has lead me to come back here and ask
> for further help! It appears I have a couple of serious issues and a couple
> of minor ones, but I have not found any joy in solving all of them by
> searching on the internet. The SpamAssassin reported the following -
>
> -1.539 FSL_HELO_BARE_IP_2 IP used in the HELO request
> The hostname should be a domain name, not an IP address
>
> -0.001 MSGID_FROM_MTA_HEADER Message-Id was added by a relay
>
> which I don't know how to solve. The Authentication tests reported -
>
> Your message is not signed with DKIM
> DomainKeys Identified Mail (DKIM) is a method for associating a domain name
> to an email message, thereby allowing a person, role, or organization to
> claim some responsibility for the message.
>
> I found the JDKIM project for the Apache James server but I am unable to find
> any instructions on how to install, configure and use it! Does anyone have a
> good pointer to documentation? I read everything I could find on the Apache
> web site but only found a couple of bits and pieces of info, nothing I could
> grok however. Will it even work with my version of James - 2.3.2?
>
> There was one other minor problem reporting that I do not have a DMARC
> record. But I think I understand how to solve that issue (by adding a TXT RR
> record to my DNS server) once I get DKIM working...
>
> Thanks again in advance for helping me find a way out of these woods....
> Marc...
>
>
> On 09/24/2015 02:27 PM, Jerry Malcolm wrote:
>> Hi, Marc,
>>
>> I have had many problems with gmail, yahoo, hotmail, etc bouncing my emails.
>> To say they are picky is an understatement. If there is ANY problem with
>> the structure of your email and/or your email setup, domain, dns, server IP
>> address, and a bunch of other things , they are going to bounce it (with
>> zero useful info to explain why). They also bounce according to how many
>> emails you've sent depending on how 'spammy' they think the email is. They
>> may let a few in. But if you send 20 'suspect' emails in a day, they'll
>> start bouncing for a day or so, then let it start passing thru again.
>>
>> I have found that the best solution is to make sure your emails and
>> everything related to your outbound server are all completely clean
>> according to spam analysis criteria. A good place to start is
>> mail-tester.com <http://www.mail-tester.com/> Go to the web site and
>> they'll give you a temp email address that you can send an email to. After
>> you send it, click the link to analyze the mail. They will grade your email
>> including the sending server parameters and tell you how 'good' your email
>> is. With detailed explanations of what is wrong. My initial score was
>> pretty bad. It took some time and was a royal pain to fix all of the issues.
>> But I finally got the coveted 100% grade. It appears gmail and others are
>> finally happy with me and are letting my emails thru.
>>
>> Jerry
>>
>> On 9/23/2015 11:32 PM, Marc Chamberlin wrote:
>>> Hi, I am running James 2.3.2 on a Linux (openSuSE 12.3) and recently
>>> encountered a problem that I am unable to resolve. I use the maillist
>>> mailet to manage a mail list for a number of users and now all emails being
>>> sent by the users to accounts at AOL, Yahoo, MSN, GMail, and Hotmail are
>>> bouncing. This is something new and I have not made any changes to James's
>>> configuration for a very long time. I have checked forward checking on
>>> reverse DNS look ups both via dig and on several different DNS checking
>>> websites and that is working correctly. The log files don't give me much
>>> help as far as I can decipher them, the mailet logs just indicate that
>>> there was a problem such as -
>>>
>>> 23/09/15 16:03:20 INFO James.Mailet: RemoteDelivery: Exception delivering
>>> message (Mail1442594207467-7122-!518000-to-hotmail.com) - [EOF]
>>> 23/09/15 16:03:20 INFO James.Mailet: RemoteDelivery: Temporary exception
>>> delivering mail (Mail1442594207467-7122-!518000-to-hotmail.com:
>>> 23/09/15 16:03:20 INFO James.Mailet: RemoteDelivery: Bouncing message
>>> Mail1442594207467-7122-!518000-to-hotmail.com after 25 retries
>>> 23/09/15 16:03:20 INFO James.Mailet: RemoteDelivery: Attempting delivery
>>> of Mail1442594207467-7122-!518000-to-msn.com to host mx4.hotmail.com. at
>>> 65.55.37.120 for addresses [[email protected], [email protected]]
>>>
>>> This log response varies a bit depending on the exact mail server that was
>>> the target of the email but looks similar enough to make me think all these
>>> failures are related.
>>>
>>> I cannot make much sense out of what is stored in the other log files that
>>> relate to this particular problem though I do see a LOT of exceptions being
>>> reported with stack walkback traces. I admit I do not know enough about
>>> these log files to be able to make any sort of correlation between the
>>> errors I see in the mailet log files and these other errors being reported
>>> in other log files. So I am out of my depths, any kind guru want to help me
>>> resolve this?
>>>
>>> Thanks in advance.. Marc...
>>>
>>
>>
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>
> --
> "The Truth is out there" - Spooky
>
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