Hi Friends, One of our client emails is not delivered to our server. And I have checked the mail queue and smtp logs, but that email domain is not on our logs. I have asked clients for a bounce message, but they said there is no bounce message. Rest of all the domains email incoming/outgoing is no issue except one to three domains email receiving on our server. But we are able to send email to them and they got our email. Any troubleshooting needs to be done on my server?
My server is Centos 7 64 bit with qmt. I Appreciate anyone who helps me. On Mon, Jun 14, 2021 at 3:27 PM ChandranManikandan <kand...@gmail.com> wrote: > Hi Folks, > > I tried to change spf behavior 3 to 1 now emails are getting delivered. > I will keep monitoring for another few days and update here. > > Thanks for your help. > > On Mon, Jun 14, 2021 at 2:46 PM ChandranManikandan <kand...@gmail.com> > wrote: > >> Hi Remo, >> >> Yes, My domain DNS is working fine. >> >> Only a few domain emails are not delivered to our email client and the >> log is showing like above. >> >> >> On Mon, Jun 14, 2021 at 1:46 PM Remo Mattei <r...@mattei.org> wrote: >> >>> Is dns still working? This will check the domain dns records so I would >>> go that route and see. >>> >>> Il giorno 13 giu 2021, alle ore 19:32, ChandranManikandan < >>> kand...@gmail.com> ha scritto: >>> >>> >>> Hi Folks, >>> >>> Suddenly email is not delivered from some domains and qmail/smtp log is >>> showing below like that when i check the log. Queue also no email there. >>> >>> CHKUSER accepted sender: from <x...@xxx.com::>rcpt <> : sender accepted >>> >>> and they got a bounce message below like that. >>> >>> ----- The following addresses had permanent fatal errors ----- >>> <x...@xxx.net> >>> (reason: 451 SPF lookup failure (#4.3.0)) >>> I have checked my domain spf and have not found any error and I haven't >>> changed recently. >>> >>> Could anyone help me, how to fix this >>> >>> >>> -- >>> >>> >>> *Regards,Manikandan.C* >>> >>> >> >> -- >> >> >> *Regards,Manikandan.C* >> > > > -- > > > *Regards,Manikandan.C* > -- *Regards,Manikandan.C*
