I can't receive my outlook email when plugged into AT&T Modem.

THANK YOU FOR REACHING BACK......  Yes, I gave up trying to fix it myself and wanted to try this forum before attempting a support phone call.

It would be nice just to download & save mail like I use to, by just starting my outlook. ..J.R.

Thank you for your time, @SgtDeadeye This issue occurs because Comcast often restricts POP3/SMTP email access to their own network, blocking incoming/outgoing mail when using another ISP like AT&T Fiber. To fix this, change your Outlook outgoing (SMTP) server settings to use SSL and authentication, or use the webmail interface for sending/receiving while on AT&T.-Richard

Thank You for the reply. I checked my outlook settings again and it appears I'm already using SSL and authentication, so I guess there aren't any workarounds. {SAD} Well I'll figure something out.  I wish I never had to go with AT&T {except for the speed difference}, but as previously stated: between the random service improvements, power outages that affected xfinity lines, internal service disruption, etc..... and to beat all ... during our last ice storm Xfinity was down almost 2 weeks, and guess what, AT&T never skipped a beat.

Again ... Thank You... and with no workarounds, I guess I won't be needing Xfinity much longer.

J.R.

FYI: I don't think it matters, but I internally disabled/bypassed the AT&T modems wireless, since my TP Link Router works great.