550 Sender verify failed

[TestUser]

Hello,
i have really strange problem...
I have done this 100 of times....
till now
on server A = web
on server B = emails
I want to send an email from A to B using a PHP form...
and all emails get stuck on A
how would I debug/fix this?

anything?
anyone?
Thank you in advanced!

 

[gate2vn]

Have you unchecked "Use this server to handle my emails." on server A yet?

 

[Richard G]

Sender verify failed.... did you adjust the SPF records correctly on the server?

 

[TestUser]

2x yes

 

[gate2vn]

What do you have in Exim log?

 

[TestUser]

ha, i just found out on server B default mail is different then on server A
but... could this be the problem?

 

[Richard G]

Yest that might, but I also see things like this:

SSL verify error: certificate name mismatch: DN="/CN=node2.limonet.si" H="mail.kdrog.si"

I hope mail_sni is active.

And this:

RCPT TO:<[email protected]>: 550 No such recipient here

 

[TestUser]

the problem was...
default emails on A and B was not same...
i create same email account on B as it was (default) on A... now works...
WOW!

 

[gate2vn]

the problem was...
default emails on A and B was not same...

Yes, that is the reason. Because when you are sending mail from PHP using mail() function, the default outgoing is your-DA-username@domain. And the server B will verify it. If it's not existing, then the sending will be failed. Don't need to create another email account, just a forwarding is good enough.