> On May 5, 2017, at 8:48 AM, Georg Sotsas <georg.sot...@gmail.com> wrote:
>
> The mails sent to xxxx.x...@guilford.com remain in the queue with this error:
> Host or domain name not found. Name service error for name=guilford.com
> type=MX: Host not found, try again
This sounds like an error with *outbound* mail, please show the unredacted
log entries (from the mail log, not "mailq" output), not just the error
message. You can obfuscate email addresses, while otherwise leaving the
error message intact.
[ Wietse, this error was not related to the largish IP address count of
the MX host, it was the actual MX RRset lookup that servfailed.
Perhaps something stale in the OP's DNS cache, or chroot issues.
src/dns/dns_lookup.c(481):
vstring_sprintf(why, "Host or domain name not found. "
"Name service error for name=%s type=%s: %s",
name, dns_strtype(type), dns_strerror(h_errno));
]
> The DNS resolution is working fine (and all the other Emails leave the mail
> relay without any problems):
> https://gist.github.com/anonymous/a282b54e74c3cbbbe31c2b0391fc0c97
Why pollute github with junk unrelated to software development? And make
readers of the list jump through hoops chasing link. Please post relevant
data with your message.
> I've tried to run postfix (smtp/submission) with and without chroot.
These handle *inbound* mail, assuming you're referring to "smtp inet ... smtpd",
and "submission inet ... smtpd". The relevant service for outbound email is
"smtp unix ... smtp".
> But finally I have no clue on what is going wrong with this domain.
Perhaps a chroot issue anyway.
--
Viktor.
