Visitor
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1 Message
Emails from my private domain sent via Comcast server going to recipient's spam folder
Hi, and thanks in advance for any help. Comcast/Xfinity is my ISP, and I send emails from my business domain through the smtp.comcast.net server. Recently I've found that an increasing number of the emails I send are ending up in the recipient's spam folder. My technical knowledge is extremely limited, but from what I've been able to glean online, I think the issue could perhaps be that the emails are failing authentication because they lack SPF or DKIM records? Does anyone know if this is in fact the culprit and, if so, if there's a way to add the appropriate authentication via Comcast/Xfinity?
XfinityAlex
Official Employee
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872 Messages
1 year ago
@user_499409 It's rather hard to say without knowing where you're sending and talking to the admins for those systems. However, I can see that you do not have an SPF record, nor DMARC. These are not necessarily required, but again, I can't answer for admins at all sites.
We won't DKIM sign for your messages, though you could setup your own SPF. However, I will caution you that doing so would allow anyone to send messages as your domain via our platform and those messages to be authenticated via SPF. If you wanted to do this, you could make an SPF record such as:
v=spf1 include:comcast.net ~all (this is extremely basic, and if the domain sends mail from other places, would need to be altered)
Please be mindful that if you have only SPF (no DKIM) and an enforcing DMARC policy (quarantine/reject), and someone tries to forward the message from the original receiving system, it will definitely not pass SPF and will be treated accordingly.
If you're sending from an MUA, I don't think there's a way to do DKIM. If you're routing through your own small server, it could do DKIM there.
Feel free to DM me if you have additional questions.
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user_bac631
Visitor
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1 Message
1 year ago
I have the same problem where I use a comcast.net email address for outgoing emails in our web store. Lately all of the emails sent to Gmail-addresses have bounced and not been delivered. Google says to contact our email provider (Comcast/Xfinity) to set up DKIM and/or SPF authentication. How does one go about doing this? Where does the (v=spf1 include:comcast.net ~all) go? Isn't this something that Comcast should do for all of its email addresses as a standard procedure?
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user_996ab9
4 Messages
1 year ago
I have the same problem except mine do not go to their spam folder, instead they reject and bounce back as undeliverable for me for all Gmail accounts. I have been told by Epicor, who is the software provider, to have my ISP add or edit the Comcast domains SPF record to list Epicor as being allowed to originate my email with the following 3 hostnames: triadinet.com, triadinet.net, mail.aaih.net. Six weeks ago I opened a support ticket and it still remains as, "Assigned" and nobody will help me! Hoping for help from a Comcast employee here!
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