Stuart Longland (VK4MSL) on Nostr: ``` Remote-MTA: dns; gmail-smtp-in.l.google.com Diagnostic-Code: smtp; 550-5.7.25 ...
```
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.25 [2001:44b8:21ac:70f8::8] The IP address
sending this message does not 550-5.7.25 have a PTR record setup, or the
corresponding forward DNS entry does 550-5.7.25 not match the sending IP.
As a policy, Gmail does not accept 550-5.7.25 messages from IPs with
missing PTR records.
```
Gmail, you're full of crap. 2001:44b8:21ac:70f8::8 *does* have a reverse PTR record, and it *does* match gapmx.vk4msl.com, which is what the server would have reported.
Published at
2025-12-03 22:16:31 CETEvent JSON
{
"id": "331581791c77ce5eb551f57c546250410680b1f06b10fbb97b6165353fe4dae5",
"pubkey": "54e8ecdf233aeff783f2894eb63943db8238c447956b1f850a3989c15b292b6d",
"created_at": 1764796591,
"kind": 1,
"tags": [
[
"proxy",
"https://mastodon.longlandclan.id.au/@stuartl/115657709409661968",
"web"
],
[
"proxy",
"https://mastodon.longlandclan.id.au/users/stuartl/statuses/115657709409661968",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://mastodon.longlandclan.id.au/users/stuartl/statuses/115657709409661968",
"pink.momostr"
],
[
"-"
]
],
"content": "```\nRemote-MTA: dns; gmail-smtp-in.l.google.com\nDiagnostic-Code: smtp; 550-5.7.25 [2001:44b8:21ac:70f8::8] The IP address\n sending this message does not 550-5.7.25 have a PTR record setup, or the\n corresponding forward DNS entry does 550-5.7.25 not match the sending IP.\n As a policy, Gmail does not accept 550-5.7.25 messages from IPs with\n missing PTR records.\n```\n\nGmail, you're full of crap. 2001:44b8:21ac:70f8::8 *does* have a reverse PTR record, and it *does* match gapmx.vk4msl.com, which is what the server would have reported.",
"sig": "cba8c7caf2b31e3d33f8859fe9158d52eb55744505b26440ca296f623a9ee202a1b255bab1664877d0f1de274600a63ce7edb8c311c6905233571de9b79271d6"
}
