Port 25 unblock, CSA "unable to help"
Per other requests here, I am trying to get port 25 unblocked for personal use on my internet. I have an IH ticket (you can probably see it from the backend, but can provide number if needed).
Like this post: https://forums.xfinity.com/conversations/email/port-25-unblock-art-of-the-business-as-usual-runaround-and-is-there-anybody-out-there/636861fc92a15b227c29043f, I got the runaround from CSA. Telling me it is not possible, FTC says it's not allowed, spamming me with articles on why it's a security risk, informing me of spamhaus. And eventually saying they tried to unblock it but it failed, so I'm out of luck.
@XfinityCSAEmail, can you please assist and get my port 25 unblocked? I am aware of what it is, what it does, and why it could be bad. But I need it to run my internal SMTP mail relay for my domain. I am aware that I am responsible for traffic going out over port 25 from my network. The relay only accepts email from my domain, and only internally from my network, and I have the SPF record setup to ensure it will get received by destination mailservers.
2 months ago
I don't think you're going to have any luck with a port 25 unblock on a residential account, and not a static IP with business account. It's also going to be blocked every time you get a new IP address out of the pool, or anytime the IP block is shuffled.
What you can do is use a relay service for a secondary MX that will redirect your mail to a port of your choosing. Pick one that isn't blocked. Runs about $10-15/year usually and can even work with dynamic DNS.
This can be a spam problem as backup mail servers are usually targeted for spam, just because they figure you are caching mail when the primary goes down and you probably aren't going to have the same protection on it. The relay source is going to look legit to your mail server, so keep it in mind for your own spam control. You usually have to do some other content filtering/attachment blocking in this configuration if you don't have a hot fail-over.
What you are really looking for on a mail server is high availability. That isn't going to happen with random IP address changes on a residential account anyway.
2 months ago
Hello @user_cbb5b3, thanks for reaching out for help on our forums! At this time we do not support port 25 for transmission for email. Please configure to port 587 instead. Refer to this link here for additional details: https://www.xfinity.com/support/articles/email-port-25-no-longer-supported.
10 days ago
Latest and greatest (Still working on this. CSA is not helpful at all.
Got CDA, after a lot of effort (and initially trying to send me to internet support, which I told them I did not want as they would be unable to help me), they said they found it, I would need to fill out a form, wait two days and restart my modem. They didn't have the form but would do a HOT TRANSFER to someone who would. Got transferred, she said her goodbyes, and then INTERNET SUPPORT asked me what I wanted and started troubleshooting my issue.
Comcast 11 - User 0.