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Questions tagged [email-bounces]

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

Bounces can result from unknown users, failed mail servers, or other network or configuration issues.

402 questions
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SPF Limits and SPF Merging

I am using Zoho Mail, AWS SES, GMAIL SMTP, Cloudflare email route and Yahoo SMTP. they all have there own SPF record. i saw on Google the only 1 SPF should be added in hostname and maximum 10 SPF hostname is supported in 1 SPF record. I am trying to…
Mehul Kumar
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520 ip and spf record not match

We are using Google Workspace and set Email forwarding using recipient address map to forward messages at our domain name (@example.com) to an external domain name (@external.com). Ex. mail sent to info@example.com will forward to…
user1822824
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Procmail not bouncing emails

I have a catch-all email address for my domain, however I want to block certain addresses from receiving mail. Before, I was doing it like this: :0 * ^(X-Original-To): username@example.com /dev/null This works fine, however, the email is silently…
Mike
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What exactly can I conclude from "High scoring spam message has been dropped (in reply to end of DATA command)"?

I operate a web site that offers user registrations. Users get automatic registration success e-mails, sent through a professional e-mail hosting company (not directly from our own server). This has worked well for months. Today for the first time a…
Joe7
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postfix limit sending rate PER MX domain?

I know postfix can limit concurrent connections to recipient "domains", but I am sending emails to websites from different domains that may use the same email service (Google, Outlook, etc.) for the MX domains. Is there a way to limit the sending…
rosstex
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How to solve '521 5.7.1 Service unavailable; client x.x.x.x blocked using Return-Path'?

How to solve or interpret following error? I'm not sure if anything should be done on client (sender or sending account of a domain) or ask remote postmasters for help. (expanded from ): host …
Jiri B
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Postfix Conf - Unknown user

Can't receive emails for virtual users but they can send. UNIX users that can receive and sent. What am I doing wrong? root@localhost: postconf -n append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes compatibility_level =…
Jason Frank
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450 4.7.25 Client host rejected

On #Exchange2013 I am getting the error message as follows, generated the error '[{LRT=};{LED=450 4.7.25 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.130]};{FQDN=};{IP=}]'. I am getting this error message only when the user sends…
mfarazk86
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Can I redirect all of the NDRs for my domain to a central mailbox in Exchange Online?

At my company our ticketing system pulls from dedicated mailboxes, but when an email is sent from one of them due to some automated process or other and fails it of course throws an NDR. The problem is that those NDRs trigger new tickets. What I…
Rev.Felix
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How to send subdomain emails to main domain?

I created a mail server (mail.mydomain.com) and can send emails from something@mydomain.com without any issue. But when some email addresses (which I tried to send email to) fail, bounce messages try to go to something@mail.mydomain.com and can't be…
Xel Naga
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O365 - Email redirecting to shared inbox

I have a odd instance where by an email (password reset) from one of our third-party providers is being redirected to a shared inbox rather than the user it was intended for. I can see on the original email it is set To: <> however the email never…
TomSlinger
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Certifying email for more reliable delivery

Is there any effective way to certify a domain name, an email server, an email message, etc so that it will not be bounced as spam? I've got a short, plain letter .com domain name registered through godaddy (with proxy-registration) that has never…
Jason Kleban
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Setup Domain Alias for Exchange 2003

We currently host email for our domain @gfreview.com on an Exchange 2003 server. We are trying to add a domain alias @i.gfreview.com. We have added the MX record for the i.gfreview.com domain to point to our server, and updated the Default Recipient…
Jeremy Odle
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What should email server do with email sent to unknown users?

When my email server receives mail sent to an unknown local user should the server send the message back to the sender or should the email just be dropped? I'm just curious what is most preferred. I can think of cases where both options are helpful…
Keith Maurino
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How can I get my incoming mail working again?

We are using webmin and virtualmin the emails have been working great over the last couple of weeks using virtualmin but today suddenly they have stopped. I get this in my mail log: Jul 1 13:15:03 server1 postfix/pickup[18805]: 4A7276E093D: uid=0…
stoneseraphim
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