Hi Folks, The client responded when they send email to our server it is showing a connection timeout from their end and not releasing from their server and not reaching our server. Is that our dns issue or their dns issue or any other issue? Do I need to do anything on my end?
Am facing this issue only for this domain, rest of others are working well (incoming/outgoing) On Wed, Jun 23, 2021 at 9:39 PM Eric Broch <[email protected]> wrote: > Get the IP address of the remote MX of questionable domain and search the > logs for it. If it is not in the log it can hardly be your problem. > On Jun 22, 2021, at 9:41 PM, ChandranManikandan <[email protected]> wrote: >> >> 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 <[email protected]> >> 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 <[email protected]> >>> 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 <[email protected]> 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 < >>>>> [email protected]> 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 <[email protected]::>rcpt <> : sender accepted >>>>> >>>>> and they got a bounce message below like that. >>>>> >>>>> ----- The following addresses had permanent fatal errors ----- >>>>> <[email protected]> >>>>> (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* >> > -- *Regards,Manikandan.C*
