sender rejected. AUP#CXSNDR
Occasionally I am unable to send email to valid email address. Today when trying to send an email to a location in Canada, to an administrator of an Email Hosting Company (EHC) over there, and Cox c...
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If the alias is a real address, yes, this could be a problem. As far as it working intermittently, well, this would be inconsistency of the third-party administer for Cox.
To prevent spoofing, spamming, maliciousness, Cox needs to verify the IP of the sending client. If your IP address is using a functional, non-Cox address to send email through their servers, Cox would probably block it because "somebody" is using your IP address. However, if Cox did suspect maliciousness, I don't know why Cox would reply with an NDR. Is Cox being polite to malcontents?
Why are you using an alias with Cox...to mask your email address?
Do you have 2 accounts or profiles in Outlook? One for Cox and the other for ABC?
If you use the Cox profile, does the ABC account list as a choice under the From address?
Did you previously send the email via Cox address and then later attempt to reply via the ABC address?
It's not the email settings, like I said, Cox receives my email, and tries to validate the authenticity of the sender domain, and based on it's filtering it doesn't allow anymore. Last time Cox gave me SPF record, which was added by my Email Hosting Company (EHC) to what Cox expects. What I am saying is that, something has changed and the SPF record now needs to be updated, and I need that from Cox. Basically that is what it boils down to it.
When I said intermittent problems, I am referring to a set of events. When my emails fail, I contact Cox, and usually it takes a week to get the info that I need, either it requires a change at my end or my Email Hosting Company (EHC). Problem disappears. Few years later problems occur. I go to Cox, they give me updated SPF, and my EHC updates. Problem disappears for few years. And now again problem has occurred. Intermittent does not mean 2 emails go out, and then fails on 1, and then few more goes out and fails on couple. It's either stops sending all emails or lets it through.
Does anyone know a recent updated SPF mx record?
You keep writing "my ISP." Isn't Cox your Internet Service Provider? I was assuming Cox was your ISP because you're can authenticate on their servers for Cox email service.
What did Cox specifically send to you as an SPF record...an email, a trouble ticket, line of text, etc? What did you do with the SPF record?
Do you have a Cox Business or Cox residential account?
Sorry Bruce, you are right. Cox is my ISP, what I meant to say my email hosting company. So I am going to and correct reference to ISP to Email Hosting Company (EHC).
