Gmail is blocking me. I read the info on the Wiki and noted the "if one uses synchro.net for emailing purposes, this will not apply in that case" part.
Solutions?
https://wiki.synchro.net/module:dyndns#spf
--
digital man (rob)
Yeah. That didn't work.
cvs.synchro.net reporting delivery failure of message
from Raymar to raymars.music@gmail.com
Reason:
gmail-smtp-in.l.google.com replied with:
"550 5.7.26 https://support.google.com/mail/answer/81126#authentication a92af1059eb24-12ddd942807si1952775c88.35 - gsmtp"
instead of the expected reply:
"250 ..."
Re: SPF DKIM DMARC
By: Raymar to Digital Man on Mon Apr 27 2026 08:25 pm
$ host -t txt geo.synchro.net
geo.synchro.net descriptive text "v=spf1 mx a -all"
$ host -t mx geo.synchro.net
geo.synchro.net has no MX record
Do you see the problem? Your SPF record says your MX can send mail, yet you have no MX record. Like the wiki page says, this works
"If your sending mail server is also the mail exchange (receiving mail server) for your domain", so you need to make mail.synchro.net the MX for your domain (explained on the same wiki page).
| Sysop: | Gate Keeper |
|---|---|
| Location: | Shelby, NC |
| Users: | 833 |
| Nodes: | 20 (0 / 20) |
| Uptime: | 145:18:54 |
| Calls: | 14,275 |
| Calls today: | 5 |
| Files: | 5,294 |
| D/L today: |
54 files (42,303K bytes) |
| Messages: | 647,509 |