Error when sending email from webmail

[AamirKabli]

When I am trying to send an email with an attachment from Zimbra Webmail, I get the below error.
Could not send message: mail.SEND_FAILURE
method: [unknown]
msg: SMTP server reported: MESSAGE_NOT_DELIVERED
code: mail.SEND_FAILURE
detail: soap:Sender
trace: qtp1097575009-24714:https://172.31.37.132:60443/service/soa ... fb879685cc
request:
Body: {
SendMsgRequest: {
_jsns: "urn:zimbraMail",
m: {
attach: {
mp: [
// [0]:
{
mid: "300",
part: "2"
}
]
},
did: "300",
e: [
// [0]:
{
a: "aamir.kabli@epicentertechnology.com",
t: "t"
},
// [1]:
{
a: "rajibr@voxtab.com",
p: "rajib roy",
t: "f"
}
],
id: "300",
idnt: "1ff69550-6580-42f6-9140-e92a9feb1303",
irt: {
_content: "<1672370469.120430.1422887363740.JavaMail.zimbra@voxtab.com>"
},
mp: [
// [0]:
{
content: {
_content: "Test"
},
ct: "text/plain"
}
],
su: {
_content: "Test Attachment"
}
},
suid: 1422887448936
}
},
Header: {
context: {
_jsns: "urn:zimbra",
account: {
_content: "rajibr@voxtab.com",
by: "name"
},
authToken: "(removed)",
notify: {
seq: 2
},
session: {
_content: 126210,
id: 126210
},
userAgent: {
name: "ZimbraWebClient - GC40 (Win)",
version: "8.0.7_GA_6021"
}
}
}

[jorgedlcruz]

Hi Aamir,

This looks like DNS problem, please share with us the contento of your /etc/hosts /etc/hostname /etc/resolv.conf, and the result of ipconfig and also like zimbra user the result of zmhostname.



Best regards

[pk-oso]

Hi you two...! Sorry about writing on this post after a lot of time.. My Zimbra 8.8 is showing this error after updating and installing rspamd as antispam platform for my email service. My DNS configuration looks good:
.- Zimbra Server is DNS itself
.- Secondary DNS for my zimbra server is my LAN DNS server
.- Resolv.conf, hosts and hostname, zmhostname and IP config look good and matching all

Error is similar to Aamirkabli:
"Could not send message: mail.SEND_FAILURE
method: [unknown]
msg: SMTP server reported: MESSAGE_NOT_DELIVERED
code: mail.SEND_FAILURE
detail: soap:Sender..."

Any suggestion? I have check my recent zimbra configurations changes and all looks good