Delivery Temporarily Suspended
@CCAntiSpam you have helped us with an issue in the past, I wonder if you're able to help again. Our customers are experiencing problems receiving emails from our mail servers to comcast.net accounts right now. Our logs are flooded with deferral messages like:
Dec 2 15:37:24 *** postfix/error: 7035761EDA: to=<***@comcast.net>, relay=none, delay=0.06, delays=0.05/0/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with mx2.comcast.net[126.96.36.199] while sending MAIL FROM)
It started this morning and is happening across all of our servers. We maintain an excellent sender score reputation, sanitize our mail well, aren't on any blacklists, so I'm not sure why we're getting all the deferrals. Seems to only be happening with the comast.net domain.