Xfinity IP Address blocked by Spectrum when trying to use SMTP

I have a visitor staying with me from out of state, and he's trying to send email through his ISP (Spectrum) via SMTP, but I'm seeing the following error message when he attempts to send an email:

READ Apr 17 10:46:19.309 [kCFStreamSocketSecurityLevelNone] -- host:mail.twc.com -- port:587 -- socket:0x600000578000 -- thread:0x6000038cc040
554 p-impout002.msg.pkvw.co.charter.net cmsmtp [personal information] blocked. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information. AUP#Out-1130

From my research this appears to be the same issue as discussed here. From what I can tell there may be a DNS configuration problem with my IP address [Edited: "Personal Information"]?

Can someone take a look?

Thanks!

Responses

Accepted Solution

XfinityAlex

Official Employee

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881 Messages

7 months ago

@user_c7e2sg I would need your IP address. TWC/Charter/Spectrum requires each sending IP to have a proper DNS entry for a PTR record. Most Comcast IPs have this, yours may not. If you can provide your IP (whatismyip.com, the IPv4 address is the one I need), I will reach out to our DNS team.

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user_c7e2sg

4 Messages

@XfinityAlex Great, thanks! I had my IP in the original post but it was removed for some reason. Anyway, here it is: 71.202.88.194

7 months ago

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user_c7e2sg

4 Messages

@XfinityAlex Any update on this?

7 months ago

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XfinityAlex

Official Employee

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881 Messages

@user_c7e2sg Apologies, it didn't tell me you'd replied. I'm going to see if we can get a PTR record on this now.

7 months ago

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XfinityAlex

Official Employee

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881 Messages

@user_c7e2sg Please try now, I asked Charter for a temporary exemption while DNS is configured properly

7 months ago

user_c7e2sg

4 Messages

@XfinityAlex Yes, that seems to have done the trick! Thanks for your help!

7 months ago

XfinityOrlandoM

Official Employee

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1.4K Messages

7 months ago

@XfinityCSAEmail

Are you able to assist on this issue they are having

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BruceW

Gold Problem Solver

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26K Messages

7 months ago

@XfinityOrlandoM: @XfinityCSAEmail hasn't posted in almost a year. @XfinityAlex or @XfinityDaveL might be better bets.

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