I am not receiving certain incoming emails

I was completely unable to connect through Outlook.  This fixed it:

https://forums.xfinity.com/t5/Email-Web-Browsing/Fixed-Outlook-365-Error-With-Comcast/m-p/3268399

Not using Outlook

that depends on what domain they are coming from - only issues with delivery i could find is rDNS failures and DMARC issues, which would be resolved by the sending domains. 

Me too.  I'm not getting any emails from Miraflores winery.  They said several of their customers who have comcast are not getting mail either and want me to ask you.  Their IT guy can't figure it out.   I added my husband's emal to their list and he is getting mail from them.   Their address is

info=mirafloreswinery.com@vrmailer3.com

Can you check into it?

Since I am not receiving them from retailers like Ulta as an example and when I try to sign up to receive emails, I get a message that I am already signed up.

Same with the pet site Chewy. I can't reset my password if needed. 

So no, not resolved.

Probably other retailers too. 

Thank you.

@volvogirl I've checked our server and can confirm that it has yet to receive notices of delivery for your email from the vrmailer3.com domain. This indicates that the emails never leave the place you are expecting to get them from. This is usually caused by an Email Suppression List. This will be maintained and controlled by the domain who can look up your email in the suppression database and see if yours is listed. Your email may show enrolled via their newsletter, but on the back-end of their system, something is preventing emails from being sent to you.

@AER19 similar as above. I've gone through and checked and the Comcast.net server overall isn't blocking or causing issues in delivery for either domain, so the issue is specific to your emails for both you and @volvogirl . This means its more likely to be something on the sending side that is preventing the emails from getting to you. Having the domains look into their email suppression lists is generally the first place this issue occurs. 

thanks for checking and responding

  Is there a way for a user to change the DMARC policy in Comcast?

I am having this issue too.  One of the domains I am not receiving email with attachments from is gmail.com. Another one is 45thdemocrats.org I would like to change my DMARC policy from p="reject" to p="quarantine" and then I will check the emails myself and decide which emails to open and which are actually dangerous..