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  1. #1
    Join Date
    May 2001
    Location
    Turkey
    Posts
    96

    my emails are going to spam folders

    I'm on a VPS. I realized that (unfortunately after months) emails sent from my server are going to spam folders.

    it seems I need to use a resolvable hostname. what does this mean?

    what should I use?

  2. #2
    Join Date
    Oct 2009
    Posts
    176
    Your hostname probably does not match a domain name; run the command hostname to find out. It should give you something ending in your domain; if this vps is sending email from example.com, your hostname should be either example.com or somethinghere.example.com.

    If this is not so, you can change your hostname using either your provider's control panel or hostname yourdomain.com .

    Also, it would probably be a good idea to set an SPF record for your domain; the simplest way in your case would be to put a TXT record in yourdomain.com with v=spf1 a ~all .

  3. #3
    Join Date
    May 2001
    Location
    Turkey
    Posts
    96
    thanks. so if I set resolvable hostname record to my domain name. it should be solved?

  4. #4
    Join Date
    Mar 2010
    Location
    Ireland
    Posts
    412
    http://www.intodns.com/
    very good tool from our friends here to check if dnses are set correctly
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  5. #5
    Join Date
    Mar 2003
    Location
    Saint Paul, MN
    Posts
    832
    Also check and make sure that your PTR matches your mailserver's FQDN, as that's a fairly common antispam check, and something a lot of people don't have set correctly.
    redpin.com - offering amazingly competent email, dns, and web hosting since 2002... because someone has to!
    Because Simple Things Should Be Simple - YouCANHasDNS

  6. #6
    Join Date
    Mar 2010
    Location
    Ireland
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    412
    as is SPF record but intodns check this type of things
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  7. #7
    Join Date
    Mar 2003
    Location
    Saint Paul, MN
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    832
    Quote Originally Posted by webangel_ie View Post
    as is SPF record but intodns check this type of things
    Really? I don't see anything on the site about SPF records, or comparing PTR and FQDN, which a service like that can't check, anyway...
    redpin.com - offering amazingly competent email, dns, and web hosting since 2002... because someone has to!
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  8. #8
    Join Date
    Mar 2010
    Location
    Ireland
    Posts
    412
    spf is not there but reverse lookup is
    why it shouldn't be able to do a reverse lookup
    dig domain.com MX
    :mx.domain.com
    dig mx.domain.com
    :192.168.1.1
    dig -x 192.168.1.1
    :mx.domain.com
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  9. #9
    Join Date
    Mar 2003
    Location
    Saint Paul, MN
    Posts
    832
    Sigh.

    A fairly common problem with sending mail (or the inability to successfully do so) is a mismatch between what the server reports as its FQDN during SMTP, i.e.

    Code:
    EHLO foo.bar.com
    ...and the server's PTR record:

    Code:
    dig -x 300.400.500.601
    node666.supercalifragilisticexpealidocioushosting.biz
    Since the only way to tell what FQDN the server reports during an outgoing SMTP session is to receive a connection from it, there's no automated way to tell whether or not it matches the PTR record for the IP its on. (What is announced during an incoming SMTP session should usually be but isn't always the same as the outgoing FQDN, especially in circumstances where mail is sent from a different server than that on which it is received.)

    Also, the sending server's PTR and FQDN don't need to be the same as the domain's MX record, unless people are being lazy or incompetent with their SPF records, but that's a whole different issue. In fact, there are some substantial benefits to having the MX record be something completely different... but that's neither here nor there.
    redpin.com - offering amazingly competent email, dns, and web hosting since 2002... because someone has to!
    Because Simple Things Should Be Simple - YouCANHasDNS

  10. #10
    Join Date
    Mar 2010
    Location
    Ireland
    Posts
    412
    PTR of sending server should match MX record of the domain.
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  11. #11
    Join Date
    Mar 2003
    Location
    Saint Paul, MN
    Posts
    832
    <sarcasm>
    Alright, whatever, you win. I defer to your clear, indisputable, irrefutable, well-documented, and eloquent arguments. I would like to take this opportunity to publicly thank you for schooling me on the hidden mysteries of email and this DNS thing which I know nothing about; you are my master and I am but an unworthy pupil.

    Also, I would like to take this opportunity to publicly apologize for somewhat nastily thinking you had no bloody clue what you were on about and were simply post-whoring; clearly that was a rash judgment for which I assure you I now stand suitably chastised.

    To reiterate: intodns.com can solve all the worlds ills, the PTR of a server must in fact according to the RFC you so kindly linked to be identical to the MX record of each and every domain for which the server handles mail, and I'm a complete n00b who is unworthy to open my cakehole and spread unfounded and baseless opinions about those things (i.e. everything technical) with which I am hopelessly inept.
    </sarcasm>
    redpin.com - offering amazingly competent email, dns, and web hosting since 2002... because someone has to!
    Because Simple Things Should Be Simple - YouCANHasDNS

  12. #12
    Join Date
    Mar 2010
    Location
    Ireland
    Posts
    412
    I am sorry it posted twice, and no i didn't link any rfc
    intodns does not solve all the problems but help to determine some of them
    and yes PTR should be identical to MX record of the domain but multiple domains can have the same MX record I am not talking about domain A record here
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  13. #13
    Join Date
    Apr 2010
    Posts
    44
    Hello,

    Following should be set in order to prevent mails from going to spam folder :-

    1. RDNS for the server should be setup.
    2. SPF record should be set for each account.
    3. DomainKeys should be setup for each account.
    4. Check whether the DNS configurations are correct on the server.

  14. #14
    Join Date
    May 2010
    Location
    India
    Posts
    14
    Add SRV and TXT record to your hostname form the DNS zone. It will resolve the issue.

  15. #15
    Make sure that your IP is not blacklisted in any RBL List. Try to check in mxtoolbox.com database.
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  16. #16
    Join Date
    Nov 2009
    Location
    Vista, CA
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    1,060
    Quote Originally Posted by inspiron View Post
    Make sure that your IP is not blacklisted in any RBL List. Try to check in mxtoolbox.com database.
    Indeed. Ask your web hosting company to contact email service provider on the end of each emails going to the spambox and ask them to whitelist your IPs.
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