SMTP error from remote mail server after end of data: 451 4.7.500 Server busy.

Muneef

Well-Known Member
Nov 4, 2020
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Sri Lanka
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how do we can fix this ! smtp error

SMTP error from remote mail server after end of data: 451 4.7.500 Server busy. Please try again later from [xxx.xx.xxx.x]. (S77719) [TYZAPC01FT015.eop-APC01.prod.protection.outlook.com].

after restarting only emails working
 
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kodeslogic

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PartnerNOC
Apr 26, 2020
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IN
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