I tried to install this PATCH_SUPEE-10570_CE_v126.96.36.199_v1-2018-02-23-06-12-55.sh on my 188.8.131.52 Magento Shop but i get this error:
checking file lib/Zend/Mail/Transport/Sendmail.php
Hunk #1 FAILED at 119.
Hunk #2 FAILED at 129.
2 out of 2 hunks FAILED
I looked at the original installation file from 184.108.40.206 it is 100% equal.
I copied now the Sendmail.php from the 220.127.116.11 release ... works now for me. I guess one Patch missed to change the Sendmail?!
Same issue here on Magento 18.104.22.168
checking file lib/Zend/Mail/Transport/Sendmail.php Hunk #1 FAILED at 119. Hunk #2 FAILED at 129. 2 out of 2 hunks FAILED
I guess you also missed one PATCH or a old PATCH failed. PATCH 9656 v2 is needed maybe you used v1?
You need revert the 9656 v1 and install v2 first. As next you can install 10570.
I got the same error, running 22.214.171.124. As others said, I went and patched with 9652, then re-ran 10570 without issue.
You used the 9652v2 of the patch? V1 will not solve your problem.