Hi,
I'm having a problem with the delivery of email.
The sender always uses outlook.com or (hosted) office 365 (but I'm not sure if this is actually related).
Their mail server is sending the email with strict(-all) spf.
It goes through an external hosted spam filter (cluster) and than gets delivered on the mailserver of the receiver.
After leaving the spam server, the email gets another IP adres (from the spamserver) so spf check bounces the email on the receiving mail server.
I've added the spamcluster to the spf record of the receivers mailserver.
"v=spf1 ip4:1.1.1.1/27 ip4:2.2.2.2/27 ip4:3.3.3.3/24 ~all"
Still the email gets bounced with an error 550:
550-SPF: 2.2.2.2 is not allowed to send mail from senders_domain.com
550 : Reason: mechanism
Is there a way to get the emails without being bounced?
I'm having a problem with the delivery of email.
The sender always uses outlook.com or (hosted) office 365 (but I'm not sure if this is actually related).
Their mail server is sending the email with strict(-all) spf.
It goes through an external hosted spam filter (cluster) and than gets delivered on the mailserver of the receiver.
After leaving the spam server, the email gets another IP adres (from the spamserver) so spf check bounces the email on the receiving mail server.
I've added the spamcluster to the spf record of the receivers mailserver.
"v=spf1 ip4:1.1.1.1/27 ip4:2.2.2.2/27 ip4:3.3.3.3/24 ~all"
Still the email gets bounced with an error 550:
550-SPF: 2.2.2.2 is not allowed to send mail from senders_domain.com
550 : Reason: mechanism
Is there a way to get the emails without being bounced?