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BTR



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Topic # 239706 31-Jul-2018 10:29
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Yesterday one of our staff sent a bulk email out using our email service SMTP2go and for some reason almost every email sent to an Xtra address has bounced back with the email being marked as spam. 

 

 

 

The email is a legit, any ideas on what the easiest way is to deal with this? 


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UHD

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  Reply # 2065508 31-Jul-2018 10:36
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What was the precise error given by SMTP2Go? Was the mail checked with mail-tester or the like before being sent? It'll almost certainly be an over-active spam guard dog on the SMX(?) border.


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  Reply # 2065511 31-Jul-2018 10:50
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UHD:

 

What was the precise error given by SMTP2Go? Was the mail checked with mail-tester or the like before being sent? It'll almost certainly be an over-active spam guard dog on the SMX(?) border.

 

 

 

 

This is the error

 

    host mx.xtra.co.nz [210.55.143.33]
    SMTP error from remote mail server after end of data:
    554 5.7.1 Message rejected due to possible spam content


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  Reply # 2065544 31-Jul-2018 10:57
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If you look at the link I provided, the method to follow toward solution is outlined.


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  Reply # 2065546 31-Jul-2018 10:57
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  Reply # 2065550 31-Jul-2018 11:03
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Pretty much.

 

They had to do something with the amount that were getting through unfiltered. Now its pushed too far.

 

But Hio77 is doing the biz on the other thread.


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  Reply # 2065553 31-Jul-2018 11:08
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Do your SPF records include smtp2go?


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  Reply # 2065573 31-Jul-2018 11:48
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vulcannz:

 

Do your SPF records include smtp2go?

 

 

 

 

Yes although it looks as though thr SPF records aren't working properly. I've formatted them in the way provided by Google and SMTP2go and every check I have tried reports there is an issue. I suspect 2Degree's DNS is the problem as I can't use DKIM because they have a 250 character limit with their DNS records.....


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  Reply # 2066052 1-Aug-2018 08:23
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that will likely be your problem. SPF is typically a black or white thing when it comes to antispam, if your SPF fails then many antispam systems will simply block you.


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  Reply # 2066054 1-Aug-2018 08:33
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BTR:

 

Yes although it looks as though thr SPF records aren't working properly. I've formatted them in the way provided by Google and SMTP2go and every check I have tried reports there is an issue. I suspect 2Degree's DNS is the problem as I can't use DKIM because they have a 250 character limit with their DNS records.....

 

 

Why do you need such a large record? The maximum length of a text record in DNS is 255 bytes. Anything beyond that is implementation dependent, both from the point of view of DNS and mechanisms which rely on it.


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  Reply # 2066294 1-Aug-2018 13:33
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SirHumphreyAppleby:

 

BTR:

 

Yes although it looks as though thr SPF records aren't working properly. I've formatted them in the way provided by Google and SMTP2go and every check I have tried reports there is an issue. I suspect 2Degree's DNS is the problem as I can't use DKIM because they have a 250 character limit with their DNS records.....

 

 

Why do you need such a large record? The maximum length of a text record in DNS is 255 bytes. Anything beyond that is implementation dependent, both from the point of view of DNS and mechanisms which rely on it.

 

 

 

 

Because thats is the length of the key the Google provides me. 


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