550 Sender verify failed

[Anilc]

Hello,

If we face the 550 Sender verify failed error message while sending the mails or receving the mails from a domain then the possible reasons can be

1) Reverse DNS entries for MX records
2) Acceptance of postmaster address in DNS Report.

We should check the DNS report of the sender's domain & if there is RED error in DNS report on both of the above points then sender may receive

'550 Sender verify failed' error message.

Regards,
Anil Chandaliya

[www.host.co.in]

Hello,

Simply, check the "/etc/valiases/domain.com" file and replace "fail" or "blackhole" with a valid email account on that domain.
Then restart exim on server.

This will fix the error in "Acceptance of postmaster address" on DNS Report page.

Regards,
NitinJ.
System Admin.
http://eTechSupport.net