See also:
see also: DNS
Allow server in A record, allow server in MX record, disallow all others.
v=spf1 +a +mx -all
put into TXT record _dmarc.example.com:
v=DMARC1; p=none; rua=mailto:postmaster@example.com; ruf=mailto:postmaster@example.com;
| echo mail queue | mailq |
|---|---|
| read mail | postcat -q MESSAGE_ID |
| delete delayed mails | postsuper -d ALL deferred |
| delete queue | postsuper -d ALL |
more information: Postfix Queue Management
| echo mail queue | exim -bp |
|---|---|
| delete frozen mails | exiqgrep -iz|xargs exim -Mrm |
| Outlook | postmaster.outlook.com |
|---|---|
| Google Postmaster Tools |
Office Blacklist: https://sender.office.com/
Outlook.com anti-spam mechanisms: https://sendersupport.olc.protection.outlook.com/pm/services.aspx
SNDS: https://sendersupport.olc.protection.outlook.com/snds/index.aspx
If you send through an SMTP Smart Relay through Office 365, you might need to include the IP address you're sending from (not only the Microsoft servers, but your own SMTP server) in the SPF records.