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550 mf-508: Sender Policy - Relay Denied

21russell
Level 2

Hi,
I have been using TPG SMTP service to relay emails without issues.

 

However since today all my email bounced back with: "550 mf-508: Sender Policy - Relay Denied"

 

I am unable to send email. Please help.

Ed

3 REPLIES 3
alanguide
Level 8

Mods: Yes another one experiencing this.

BasilDV
Moderator

Hi @21russell 

 

How's your outgoing mail? Is it going through now?

 

Are you using an email client like outlook, thunderbird, etc.? Can you try on the webmail?

 

BasilDV

OggyP
Level 2

Hi, did you manage to resolve this issue, as I have also been having this issue; 

host mail.tpg.com.au[54.206.19.13] said: 550 mf-505:
    Sender Policy - Relay Denied (in reply to MAIL FROM command)