We end up to reconfigure any files, and I do this think this is right. The OJS heavily rely on sending emails, It should be a normal setting in the application setting to deal with this.
I have defined our G Suite and its working fine, DMARC1, DKIM1 and all setting, no issues, We even disabled the OPNE_BASEDIR to eliminate any issues. However the issue still remain
@ IN MX 1 ASPMX.L.GOOGLE.COM.
@ IN MX 5 ALT1.ASPMX.L.GOOGLE.COM.
@ IN MX 5 ALT2.ASPMX.L.GOOGLE.COM.
@ IN MX 10 ALT3.ASPMX.L.GOOGLE.COM.
@ IN MX 10 ALT4.ASPMX.L.GOOGLE.COM.
@ IN TXT "v=DMARC1; p=none; rua=mailto:firstname.lastname@example.org"
@ IN TXT "v=spf1 include:_spf.google.com ~all"
@ IN TXT "v=DKIM1; k=rsa; xxxxxxxxxxxxxxxx"