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Optimize SPF TXT record
 

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randsco101 at yahoo

Jan 13, 2007, 9:02 AM


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Optimize SPF TXT record

Hello all and TIA for your help.

I own the randsco.com domain. We normally send all unrouted email for our domain to an active email account. A few days ago, we began receiving bounced "undeliverable" messages back, apparently sent from bogus email addresses on our domain. (Seems that spammers are using fake randsco.com email addresses in the "from" field? Wankers.)

So ... I went looking for a way to combat this and found SPF. Yay!!

We requested that our host provider add an SPF record for us and they added this one:

v=spf1 ip4:207.218.208.0/24 a mx a:randsco.com a:siteground126.com a:serv01.siteground126.com mx:randsco.com mx:siteground126.com mx:serv01.siteground126.com include:siteground126.com include:serv01.siteground126.com ~all

After reading up and running some tests against it, I began to question the efficiency and validity of the record. (The included domains don't have SPF records, for one and two, I don't think the includes are needed?)

Running the wizard lead me to a much simplier one:

"v=spf1 a mx ip4:207.218.208.0/24 ~all" (Where I just copied the ip4 arguments from the host version)

Because I'm new to SPF, I'm not certain if I should just ask my host to replace theirs with the one spit out from the wizard? Is there a more succint/efficient record for our situation?

After reading some of the help emails, it seems that if one specifies an IP range, one can omit the MX mechanism? (and that IP's are faster/cheaper lookups?)

I'd modify the record myself (we have a domain registrar separate from our host - pakNIC) but they currently do not support adding TXT records to DNS. (I've written and requested that they do) :-(

Can someone help me optimize an SPF record for our domain? Speak to a all the a:, mx: and include: mechanisms used by our host? (Are they really needed?)

Thank you.






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Subject User Time
Optimize SPF TXT record randsco101 at yahoo Jan 13, 2007, 9:02 AM
    Re: Optimize SPF TXT record scott at kitterman Jan 13, 2007, 9:19 AM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 13, 2007, 9:55 AM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 13, 2007, 10:11 AM
    Re: Optimize SPF TXT record alex at ergens Jan 13, 2007, 5:02 PM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 9:12 AM
            Re: Optimize SPF TXT record alex at ergens Jan 14, 2007, 12:08 PM
                Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 12:49 PM
    Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 12:25 PM
    Re: Optimize SPF TXT record scott at kitterman Jan 14, 2007, 12:39 PM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 1:17 PM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 16, 2007, 10:48 AM
    Re: Optimize SPF TXT record alex at ergens Jan 14, 2007, 1:27 PM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 5:43 PM
            Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 5:54 PM
            Re: Optimize SPF TXT record alex at ergens Jan 14, 2007, 6:59 PM
                Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 10:02 PM
            Re: Optimize SPF TXT record scott at kitterman Jan 14, 2007, 7:41 PM
                Re: Optimize SPF TXT record randsco101 at yahoo Jan 14, 2007, 10:05 PM
                    RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 7:36 AM
    Re: Optimize SPF TXT record scott at kitterman Jan 14, 2007, 7:40 PM
    Re: Optimize SPF TXT record jay-spf at kajayr Jan 15, 2007, 3:22 AM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 8:20 AM
            Re: Optimize SPF TXT record scott at kitterman Jan 15, 2007, 8:54 AM
                Re: Optimize SPF TXT record velvetpixel at mac Jan 15, 2007, 10:35 AM
            Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 8:54 AM
    Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 3:49 AM
        RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 7:33 AM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 8:13 AM
            RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 8:28 AM
            Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 8:42 AM
                Re: Optimize SPF TXT record scott at kitterman Jan 15, 2007, 12:19 PM
        Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 8:13 AM
            Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 8:53 AM
                Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 9:52 AM
                    Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 11:48 AM
                        Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 12:51 PM
                            RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 1:05 PM
                            Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 1:10 PM
                                Re: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 1:39 PM
                                    RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 1:48 PM
                                    Re: Optimize SPF TXT record spf at beer Jan 15, 2007, 1:50 PM
                                Re: Optimize SPF TXT record bwalton at rawbits Jan 15, 2007, 9:20 PM
                                    Re: Optimize SPF TXT record kindler at gmail Jan 15, 2007, 9:29 PM
    RE: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 7:54 AM
        Re: Optimize SPF TXT record scott at kitterman Jan 15, 2007, 8:57 AM
    Re: Optimize SPF TXT record scott at kitterman Jan 15, 2007, 1:10 PM
    RE: Optimize SPF TXT record randsco101 at yahoo Jan 15, 2007, 6:17 PM
        RE: Optimize SPF TXT record steve at teamITS Jan 15, 2007, 11:32 PM
    RE: Optimize SPF TXT record randsco101 at yahoo Jan 16, 2007, 7:34 AM
    Re: Optimize SPF TXT record bwalton at rawbits Jan 16, 2007, 8:05 PM

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