16 Jun
2022
16 Jun
'22
8:50 a.m.
For anything we have that sends through using SMTP, if a customer wants to send through a Microsoft mail server they definitely have to set up a relay as per the document Richard linked to.
Which is why I get them to use Amazon SES instead if possible.
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Alan Bourke
alanpbourke (at) fastmail (dot) fm