Anyone else having an issue with MS Exchange push email and 5.1?

ever since upgraded 5.1 seem have lost push functionality company's ms exchange account. fetch works fine, i'm not getting via push--i have open mail causes new email download @ time.

else having issue? problem company's server?

 

i'll set exchange account on phone later , edit post results. if worked before doubt it's server suppose it's possible went wonky on server same time upgraded. phone supported company , can ask?

edit: push turned on in both settings , on exchange account messages arrive immediately. settings same?

 

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