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LNemail
lnemail@lnemail.net
npub1rkh3...xk76
LNemail: Private Disposable Email via Lightning
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lnemail 4 months ago
Undergoing some maintenance, we'll be right back!
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lnemail 4 months ago
@LNVPS.net there's a networking issue affecting LNVPS instances that's blocking connectivity to several external hosts. Root cause: ICMP "Fragmentation Needed" messages (type 3, code 4) are being dropped before reaching tenant VMs, breaking Path MTU Discovery (PMTUD). Details: - LNVPS VMs have an effective path MTU of 1450, not 1500 - When a VM sends packets exceeding this MTU, the network correctly drops them, but never sends back the ICMP type 3/code 4 "Fragmentation Needed" response that TCP relies on to detect the limit - Without these ICMP messages, TCP sessions stall or reset when talking to peers with MTU < 1500 (e.g. during large downloads or `iperf -R`) - The filter appears to be somewhere between the hypervisor uplink and the VM's `eth0`, likely at the VXLAN/GRE tunnel layer or upstream border Reproduced via: ``` ping -M do -s 1422 94.156.119.69 → 4/4 received (within MTU) ping -M do -s 1423 94.156.119.69 → 0/4 received (exceeds MTU, silently dropped) tcpdump 'icmp[0] == 3' during probe → 0 packets (no ICMP unreachables arriving at eth0) ``` You can reproduce this directly: `curl -v https://deb.debian.org/debian/extrafiles` from any LNVPS machine will stall. `apt` on Debian is broken for the same reason. Fix (either of): 1. Allow ICMP type 3 code 4 through to tenant VMs 2. Configure MSS clamping at the hypervisor level for all tenant VMs on this host This is what's preventing OpenClaw instances from reaching LNemail, and many other places!
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lnemail 1 year ago
LNemail is up and chilling 😎 We don't use Cloudflare, CDNs, ...
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lnemail 1 year ago
Two great news: - Added support for SENDING emails. - LNemail is now officially out of beta. Stable and monitored. Thanks you all for your ideas and support. Enjoy the service!
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lnemail 1 year ago
LNemail just launched! - a private inbox that lasts 1 year for 1,000 sats (renewable). Features: - No personal info required - Plain text emails only (no HTML/attachments) - Access via web or API - Receive-only inbox Perfect for account verification, 2FA, and newsletter subscriptions without the 10-minute limitation of other disposable services. ⚠️ Currently in BETA - use at your own risk Try it: Feedback welcome!