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Forwarding email message breaks DKIM

I have problem with postfix, DKIM and forwarding messages. In almost every article about DKIM I’m reading that “if I do not modify any fields in message header, DKIM signature should still be valid ...
user71061's user avatar
  • 501
1 vote
2 answers
160 views

Odd behavior between Outlook client-based automatic reply forwarding and Exchange Powershell

At my current company we're running an on-prem Exchange 2016 email server, and when we have to manage email forwarding for employee absences in certain departments that need coverage, we have users' ...
Billie Kincaid's user avatar
1 vote
1 answer
180 views

Office365: Strip specific email addresses in "To:" field with transport rules

I've setup a transport rule to redirect all messages from [email protected] to [email protected]. The redirection is working fine, but the support system identifies support@...
Vinícius Ferrão's user avatar
0 votes
0 answers
86 views

Exim filter check if email is forwarded

I'm using Exim with Cpanel. I created email forwarding from '[email protected]' to '[email protected]' and '[email protected]' to '[email protected]'. I want to filter only emails that are ...
mm1234's user avatar
  • 1
0 votes
1 answer
174 views

Deduplicate forwarded emails sent to mutiple distribution groups

I have 2 distribution groups set up listening on 2 different email addresses: [email protected] and [email protected]. I have one (Shared, if it makes a difference) mailbox set up Emails. This mailbox ...
Matthew Steeples's user avatar
0 votes
1 answer
518 views

Exchange Online redirect rule doesn't reset "To" address

My configuration goal is to forward / redirect a message going to a mailbox to an external site (its an email capture setup). I was using forwarding, which is straight forward but includes the ...
Gerard ONeill's user avatar
1 vote
2 answers
3k views

Why does DMARC fail for forwarded emails from this particular domain when it passes for all other domains?

I run a virtual mail server that forwards emails to my domain to a Gmail address, and I use PostSRSd to rewrite the addresses. For example, if someone sends an email to [email protected], my mail ...
John Doe's user avatar
  • 365
1 vote
2 answers
224 views

How to provide /etc/aliases / .forward functionality in the current anti-spam environment?

The actual problem I'm having: My email server (exim, but it hardly matters for this), which I've been running for years, forwards email via /etc/aliases (i.e. [email protected] points to ~5 people) and ...
rlpowell's user avatar
  • 203
0 votes
1 answer
1k views

DKIM fails when users forward Hotmail to Gmail

I use AWS SES for sending mail and CloudFlare for DNS. I set up DKIM following this tutorial. It works well. When a user provides a hotmail.com address and forwards it to Gmail, I receive an email ...
emonigma's user avatar
  • 269
0 votes
0 answers
193 views

status=bounced (mail forwarding loop for postmaster@localhost) when receiving an email with postfix

I use postfix with the following /etc/postfix/main.cf: smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no append_dot_mydomain = no readme_directory = no compatibility_level = 2 ...
Zlotz's user avatar
  • 11
4 votes
1 answer
4k views

Gmail blocks mails in case they are forwarded

My website sends mails to users. This has been working wonderfully for years. But since a year or so, gmail blocks mails in the following scenario: A user has the email [email protected]. ...
Armin Hierstetter's user avatar
1 vote
2 answers
2k views

Office 365 - Forward email to external domain without a mailbox

We have office 365. We want to forward email addresses from our domain to people outside our domain. i.e. [email protected] -> [email protected] One way I think I can do this is: ...
Dave's user avatar
  • 13
0 votes
2 answers
388 views

How to send email on behalf of a customer, such that they handle replies?

Scenario: I have a customer A, who authorizes me / my software to send email on their behalf to their customers P, Q, etc. Additionally, P, Q, etc. should see the email as coming from a.example.com. ...
MarnixKlooster ReinstateMonica's user avatar
1 vote
1 answer
312 views

Sending system mail via SMTP to public mail server - port already in use

I have a docker host that runs a containerized mail server. On the host there are a couple of system status mails in the mail queue that I want to be forwarded to my mail account. These Mails are ...
joscha's user avatar
  • 11
0 votes
2 answers
94 views

How do I forward all invalid incoming mails in exim

I have to all my invalid incoming to new addresss I have a route like this. virtual_aliases: driver = redirect allow_defer allow_fail domains = lsearch;/etc/userdomains user = "${...
be MrZulf's user avatar
  • 101
0 votes
0 answers
590 views

Forwarding emails while keeping From header intact

What I want to achieve is mails sent to a specific user on my domain get forwarded to "subscribed" addresses I manage while preserving sender information and extending that with forwarding ...
Rafal's user avatar
  • 1
0 votes
1 answer
248 views

Postfix forwarding to Gmail and local UNIX user

I would like to forward all email coming to everything in @foo.com to [email protected] and also to the UNIX user baz. I tried adding both baz and [email protected] to the virtual file (see config below), but ...
Jay Bosamiya's user avatar
2 votes
1 answer
840 views

How to prevent email forwarded by exim from being seen as spam

I have recently started to look after a mail system where users can host their email with a web mail front end. One of the features provided is a function to set up forwarding. The problem I am ...
VagrantPaladin's user avatar
0 votes
1 answer
841 views

SPF/DKIM setup for a registrar's email forward

I have a number of domains with a registrar with straight forward forwards to another email address. The system has worked flawlessly for a lot of years over a lot of domains but recently I created a ...
Kevin_Wales's user avatar
2 votes
1 answer
275 views

Can an SMTP server tell the sending MTA to send to another address?

Can e-mail forwarding be accomplished with the receiving MTA responding in some way that tells the sending MTA that it should send the e-mail to another address, or must e-mail forwarding be performed ...
Speed Dial Dave's user avatar
3 votes
0 answers
316 views

I am using Gmail with a vanity account alias and external SMTP server (AWS SES). My first email is not being threaded

So this is a minor inconvenience but I am curious if anyone well versed in email forwarding and Gmail can help me. I have a vanity domain I'll call [email protected]. I am using it as an alias for my ...
KP99's user avatar
  • 131
2 votes
1 answer
2k views

Correct SPF record to avoid softfail for emails sent from domain address using Gmail?

I have a domain address, such as [email protected], which forwards to Gmail. Gmail is configured to 'send email as' [email protected], using example.com's SMTP server. Emails sent from Gmail as me@example....
mix's user avatar
  • 121
1 vote
1 answer
2k views

Is an email alias technically the same as a forwarding internally?

I know there are several drawbacks using email forwarders. So I was wondering if adding an alias to an address is the same as adding a forwarder to that email address? It just differs how tools like ...
Sam's user avatar
  • 25
-1 votes
1 answer
160 views

Mail forwarder or something like that

I don't know where to start for searching this thing. I need a simple server that act like an SMTP server, accept all incoming email from every ip, every address, every everything, and forward the ...
Phantom Lord's user avatar
3 votes
1 answer
240 views

What is current advice on forwarding email - particularly to gmail

I want to move from my current hosting site to a VPS. I am very comfortable with the website hosting side of things but at the moment my stumbling block is email, something which I have never had to ...
Geoff's user avatar
  • 31
1 vote
1 answer
518 views

Email forwarding SPF and DKIM domains

In preparation for publishing a strict DMARC policy, I've: Published a reporting-only policy. Gathered nearly 2 months' worth of reports and uploaded them to dmarcian. Started analysing them and ...
mythofechelon's user avatar
1 vote
0 answers
118 views

getting the same email multiple times (email duplication)

im not sure if this is the right place to ask, but it is some type of server / mail error so... The Problem: some emails that are sent to an email distributor reach all members of this distributor ...
Lukas's user avatar
  • 11
0 votes
3 answers
595 views

Forwarding eMails from Exchange to Icewarp bounces back, but not via distribution list

we are testing heavily Icvewarp as replacement for our outdated Exchange. Unfortunatly there is nearly no docu around in the internet, which makes it not easy :-( We have now set up the Icewarp ...
Chris9834's user avatar
  • 301
1 vote
1 answer
338 views

Exchange admin center forward and prepend body

I want to forward all incoming E-mails to my HubSpot CRM System. To achieve this I want to configure my Exchange Server to forward them. Exchange Server seems to provide only a redirect rule and no ...
Simon Ludwig's user avatar
0 votes
1 answer
378 views

How does Virtualmin do email forwarding?

I'm confused: when I add forwarding to an existing email address in Virtualmin (6.08, Centos 7), it doesn't modify the /etc/postfix/virtual or any other file in /etc/ that I can tell. When I grep for ...
Ryan Griggs's user avatar
  • 1,033
1 vote
1 answer
2k views

Forward from one Distribution Group to another DG inbox?

Our Research Department needs to have a group email (Distribution Group); the email will consist of Staff 1, Staff 2, and Staff 3. We would like the email to copy the [email protected], where the email ...
Melissa Williams-Crawford's user avatar
-3 votes
2 answers
435 views

Are email-forwarding services safe to use [closed]

Basically can services like this snoop into my emails, even if it is an open-source system (i.e. server code may not match open source code)? Are there further resources I can read to feel more ...
Aditya Shankar's user avatar
0 votes
0 answers
154 views

Postfix forward mails to external domains as (inline) bounce

My problem: I own a postfix server with several Aliases on it. For example: [email protected] => [email protected] If I now send a email from [email protected] to [email protected] it get's forwarded to [email protected] ...
philipp's user avatar
  • 101
0 votes
0 answers
44 views

Outlook Inbox after spoofing attack is empty. Incoming mails not coming through in Inbox

Supposedly, a spoofing mail was sent to a internal and hundreds of external people from our user's account last Wednesday. Since Friday afternoon, her Outlook Inbox is shown empty and she is not able ...
ITguy's user avatar
  • 1
0 votes
0 answers
134 views

Exim .forward fails unexpectedly

I am trying to enable synchronous processing of incoming email on a host running exim. In the absence of a .forward file, mail gets appended to the expected /var/spool/mail/$USER I added a very ...
symcbean's user avatar
  • 22.7k
0 votes
1 answer
548 views

Postfix header conditional rewrite

in my mail server I have a mailbox [email protected] and an alias [email protected] which send all to [email protected]. Now when I send from [email protected] an email to [email protected], I receive ...
Lorenzo Martini's user avatar
0 votes
1 answer
487 views

Forward mail using qmail to multiple recipients dynamically

I am trying to forward an incoming mail to multiple recipients. The recipient's addresses are stored inside a mysql database, so I need to call a script to get the addresses before forwarding the mail....
JoJota's user avatar
  • 3
0 votes
1 answer
81 views

chaining email forwarders (forward an email to a forwarded address)

We can forward a forwarder to an address that is itself forwarded: [email protected] -> [email protected] [email protected] -> [email protected] third_address@...
Parapluie's user avatar
  • 165
2 votes
1 answer
61 views

Exchange Online - Route email to different address depending on sender initials

So our HR department is tiny, and gets an enormous amount of email from our agency at large. They'd like us to forward email to different members of their team, based on the alphabetical order of the ...
Scuba Steve's user avatar
-3 votes
1 answer
125 views

Postfix forward email to my gmail from a gmail failed

I am not possible to forward email from gmail account to a gmail. I come across with below link which telling that gmail is blocked to stop looping. https://superuser.com/questions/332389/postfix-...
Intellect's user avatar
0 votes
1 answer
333 views

Postfix + Dovecot to receive emails only for specific mailboxes others piped to php script

I am fairly new to Postfix, Dovecot and have only basic knowledge of mail routing. There is a server that supposed to receive emails for variety of mailboxes with unlimited domains. ([email protected],...
Michael S's user avatar
1 vote
1 answer
153 views

Xeams to Postfix Forwarder

I have a xeams mail server that has got forwarders setup to filter then forward mail onto a postfix server. The problem is that whenever I try send an email from the xeams server to an email address ...
Jed's user avatar
  • 153
2 votes
1 answer
2k views

DMARC fails on forwarded mails without DKIM

I am running a mail server (postfix) on a VPS that is set up to forward all mail sent to an address in my private domain to a GMail address. SPF, SRS, DKIM, and DMARC are set up for my mail server and ...
user3298489's user avatar
-1 votes
1 answer
52 views

Disclosure of recipient’s forward email address when my email bounces

A few times I had a situation like this: I sent an email to [email protected]. For this email, I received a delivery failure report, giving reasons like "550 5.1.1" (user unknown) or "552-5.7.0" (...
unor's user avatar
  • 246
0 votes
1 answer
4k views

Postfix + Dovecot + Sieve + forwarding + sieve

Let's suppose my domain at exampleserver.com. I have following sieve rule: require ["fileinto", "subaddress", "mailbox", "variables"]; if address :detail :matches "to" "*" { set "folder" "${1}"; ...
Flat Spaztech's user avatar
1 vote
0 answers
386 views

postfix - forward mail for unknown clients to another server: a working example, please

I need to forward(relay) mail from one postfix server to another, so that they are "answerable" with the same address as the original ones. Also, I need all mail from accounts on server 2 which are ...
Andrea Prunić's user avatar
0 votes
1 answer
76 views

In Postfix, how do I block sending emails to other domains while allowing forwarding of one email address?

I just installed PostFix on Cent OS 7. I want to set up mail forwarding from an admin address to my Gmail account but I also want to block all emails that are sent to emails that are not addressed to ...
Dave's user avatar
  • 224
0 votes
1 answer
6k views

How do I set up an MX record to route mail to my CentOS 7 Postfix server?

I'm trying to set up mail forwarding from my CentOS Postfix mail server to my gmail account and I want to be sure I'm creating the MX records properly before troubleshooting my PostFix configuration. ...
Dave's user avatar
  • 224
-1 votes
1 answer
160 views

re-forward mails already IN mailbox using qmail

I broke my qmail formwarding rule for quite a month, and incoming mails now are in my default mailbox instead of being forwarded to &another|mail-adddress.com. Is there a way to re-forward all ...
nerdoc's user avatar
  • 119
3 votes
2 answers
1k views

Can sendmail forward e-mail immediately instead of queueing?

Some of the e-mail passing through my server is forwarded to external accounts. Unfortunately, my upstream SMTP-server is very picky about spam -- and rejects some of the legitimate messages as such. ...
Mikhail T.'s user avatar
  • 2,411