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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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Gmail does not accept mail from a new VPS server with PTR setup

I have PTR records setup but I am not able to deliver mail to Gmail accounts: host gmail-smtp-in.l.google.com[2607:f8b0:4004:c08::1b] said: 550-5.7.25 [2a01:4ff:f0:a7b6::1] The IP address sending this message does not 550-5.7.25 have a PTR record…
pwz2000
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What to do if one doesn't want to receive email bounces?

Background—the standards RFC 5321 §4.5.5 states: All other types of messages (i.e., any message which is not required by a Standards-Track RFC to have a null reverse-path) SHOULD be sent with a valid, non-null reverse-path. For the avoidance of…
eggyal
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unusual rate of unsolicited mail originating from your IP address

On my server I redirect mail, arriving to in@example.com, to manager1@gmail.com and manager2@gmail.com with /etc/aliases file. Recently I got the following email in my my.email@gmail.com mailbox (where postmaster@example.com mail is redirected…
x-yuri
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Is null return path reliable indication of a bounce?

I have a mailbox that receives bounces as well as normal email (the latter includes messages from automated services). I want to filter out the bounces and forward them to another mailbox. Assume I cannot change the envelope return path in email I…
Vasiliy Faronov
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Domain of sender address does not resolve (in reply to MAIL FROM command)

When sending out emails with postfix I sometimes get this error: 451 #4.1.8 Domain of sender address does not resolve (in reply to MAIL FROM command) The domain mydomain.tld is resolvable though, meaning A, MX, PTR records are…
horen
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Setting bounce address using postfix

I want to set the bounce address or return path address to a particular email address(say someemail@example.com). Such that whenever a mail bounces it will send a reply to someemail@example.com. How can I do that using postfix ?
Souman Mandal
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Anyone have a Powershell script to look up the MX record for a domain?

I want to check to see if the email addresses in my contact management system are valid and the best way I can think to do this is to get the MX record for their domain, then open an SMTP connection and see if the remote server accepts the email…
Kevin Buchan
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Email Spoofing Or Something More Sinister?

I'm a software developer and my wife works at a small business. I'm not a security expert, but the story their IT contractor is giving her doesn't add up to me. Lately some people who send email to "Jane," the person in charge of finances at her…
Pharylon
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Postfix: do not create bounce message for virtual_alias_maps with remote servers

I am using virtual_alias_maps to forward mail to remote mail servers (GMail, icloud). I have spam prevention in place myself (SPF checks, Before-Queue Content Filter etc), but often enough spam will be accepted by Postfix, gets enqueued and then the…
blueyed
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Postfix 451 4.3.5 Server configuration error

So I'm running mail on my VPS, using Postfix + Dovecot. I am able to send, but not all mail comes in. Note: DOMAIN = my domain, but I blocked it for security reasons. The case: I want to use my mail on Twitter, but the verification email never…
dnwjn
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Where is the email bounce sent? To the @domain or to the IP that sent it?

When I send an email from noreply@mysite.com to user@yahoo.com and I use that VERP bounce format like bounce+user=yahoo.com@mysite.com Is this bounce back sent to the mail server in DNS records of the sending domain or is it sent back to the IP…
adrianTNT
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Silently drop OUTGOING mails to us.er.n.a.me@gmail.com (more than 3 dots in username part)

With postfix-2.6.6-2.2.el6_1.x86_64 on CentOS 6.4 is there please a way to inspect OUTGOING mails and silently drop them (i.e. do not send them) if the recipient looks like us.er.n.a.me@gmail.com (i.e. gmail.com domain and more than 3 dots in the…
Alexander Farber
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451 Temporary local issue with sending out emails

2012-06-14 21:57:14 cwd=/etc/csf 4 args: /usr/sbin/sendmail -f alerts@host2.thetimesoftimes.com -t 2012-06-14 21:57:14 1SfEIE-0000wK-Kj <= alerts@host2.thetimesoftimes.com U=root P=local S=678 T="lfd on host2.thetimesoftimes.com: WHM/cPanel root…
Tiffany Walker
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Postfix - Send only rejected mail through smarthost

I'm trying to improve the mail delivery for an organisation I work with (no spam). We have been using our normal mail service's smtp server as a smarthost for delivery, but recently they have blocked the account because it was sending too much…
Jords
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How to configure email server to send lots of transactional emails

My organization is currently outsourcing email delivery to an SMTP service provider. We're considering bringing that back in house to deliver our own emails. We send about 5k transaction emails per day in relation to order confirmations and…
anotherguy
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