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Questions tagged [email]

The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

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How does GDPR apply for normal email communication? [on hold]

I am member in an association. We exchange information about the work of the association by e-mail. John Doe was a member for five years and requested to terminate his membership in due time by the ...
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0answers
8 views

yum-cron Job 'cron.daily' locked by another anacron

We have a number of machines using yum-cron and an internal mirror server to keep up-to-date. Some of them will send an email letting us know the updates will be (have been) applied but don't receive ...
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1answer
23 views

Mail cipher - what to use and how many servers are up to date for secure connection? [on hold]

I have setup my personal self hosted mail server. I use Postfix, Dovecot and rspamd. My question is about cipher suites, this topic is more discussion that specific answer seeking. I have setup all My ...
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1answer
48 views

Route local outgoing mails to relayhost

TL;DR: I'm trying to force postfix to route mail sent from local user to another local user to be routed to another server (relayhost). This should not apply to incoming mail from external to local. ...
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0answers
14 views

How to config Dovecot mail attachments on digitalocean spaces or S3? [on hold]

I was wondering if it was possible to store mail attachments on a separate storage with dovecot As mentioned in https://www.dovecot.org/list/dovecot/2016-February/103077.html I have edited my Dovecot ...
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0answers
6 views

maldet not sending emails on scans but send on manual request on report

So i am having maldet running on daily scans and i am not getting emails sent of scan reports, also when i run manual scans maldet finish scan but not sending email reports. But when i want to send ...
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1answer
10 views

Postfix sends plain text emails from PHP but rejects html

After moving to another host my site stopped sending E-mails (UTF-8 HTML). But I'm still able to send text emails like these: echo test | mail -t me@example.com -s test php -r 'mail("me@example.com",...
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1answer
32 views

Should I enable port 587 for mail relay access?

I run a virtual email server using Postfix that forwards emails addressed at domain.com to specific Gmail / Hotmail accounts. This same server also acts as a mail relay, and uses saslauthd to allow ...
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13 views

Sending mail with sendmail - not sending

I have apache2.4 web server with PHP on Debian server. I noticed that my PHP mail() function doesn't send any mail. Looked at the spam folder as well. I cleared all the mail logs on my server and ...
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1answer
17 views

swaks failing on ipv6 despite forcing it to use ipv4 with -4 switch

swaks -4 -S -t user1@example1.com -f user2@example2.com -ao -au user2 -ap ***** -tls -s example3 --header Subject: Q4mSShEEoYnAviWg *** Error connecting to example3:25: *** IO::Socket::INET6: ...
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25 views

Postfix - can't recieve emails from external domain (Ubuntu 16.04)

Good morning! I have a bit common problem, but I haven't found any solution yet, after reading really a lot of forums and tutorials. Shortly: I want to send an email from external domain to my server,...
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1answer
22 views

Digital Signature is not valid

I recently received a digital signed email from a friend and the certificate is issued by COMODO RSA Client Authentication and Secure Email. My problem is the thunderbird detect it as a "Not Valid ...
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2answers
29 views

Windows machine to send email

What software/package required on a new Windows machine (say Win10) to send email. My understanding is that it needs SMTP client kind of software installed to communicate with an SMTP server to able ...
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3answers
31 views

Sending email to a server that requires a login [on hold]

I'm trying to understand how SMTP servers work in production environments. I am wondering how email can be sent from server A to server B if server B requires a login. A real life example of this ...
3
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1answer
59 views

sendmail aliases - send to root plus external address?

There are plenty of examples of how to use aliases to send email to multiple addresses, but I'm interested in sending to an internal name and an external address. For example, this doesn't work, but ...
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1answer
33 views

Postfix reply from catch-all received address

I have a postfix installation where all addresses are virtually mapped to one user, i.e.: >cat /etc/postfix/virtual @mydomain.com myuser What I want is the ability to reply to emails that are ...
1
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1answer
65 views

Repairing e-mail “domain reputation” on google?

Google's gmail has recently started marking all mail from domain example.com (real domain name is hidden) as spam, with grey-box explanation of: "Why is this message in spam? Lots of messages from ...
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1answer
52 views

Is it an issue when I change the IPv4 address of my SMTP server?

I have a postfix/dovecot setup for a personal mail account. It's really just a one-man mail setup. Now I want to move my setup to a new VPS which means it'd get a new IPv4 address. My concern is ...
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3answers
59 views

MX record pointing to A record with two different IP's

So my problem is simple I just need a solid answer so that I don't break the email service. I have two servers one for mail and other for the web service. The web server is responsible for the SSL ...
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0answers
25 views

Search for email in ton's of text files in multiple volumes [closed]

I have to search for an "email" in tons of files stored across multiple volumes ( 3 * 1 TB storage ) Search need to happen as fast as it can . What is best way to do so , I currently make use 'grep'...
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0answers
18 views

Whitelist or rewrite recipient address in postfix

I am managing a website. In production environment, all the emails are relayed through a central postfix using amazon ses as smtp relay. The reasons to add postfix in between and not use ses directly ...
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1answer
26 views

Change 550 Mail to noreply has been suspended for Exim

List item Someone replied to a noreply email address and received the following response: Change 550 Mail to noreply@domain.tld has been suspended The footer of all outgoing emails from that ...
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3answers
123 views

How can Amazon send emails from other email services?

Suppose I register an Email address on Gmail for instance. I verify my address(not domain) in Amazon Simple Email Service. Then I send emails using Amazon from this address. Who actually does the ...
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1answer
26 views

How to modify Receive header in Postfix

Each Mail Transport Agent that encounters a message adds a Receive header to indicate where, when, and how the message arrived and also some data about the receiver. When I send an email from Mac Mail....
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1answer
39 views

I have set the DKIM record but my emails is not signed?

I have set the DKIM record on my DNS server provider (Cloudflare) and i tested it using different online tools which all says that my dkim record is valid but all my messages i sent dont have DKIm ...
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0answers
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OpenDKIM-Bad signature issue for all incoming email

Newly made setup postfix with opendkim. When am sending email from my server then checking the DKIM status is PASS. But while incoming email almost every domain DKIM signature is failed by ...
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0answers
16 views

Python “alternate malfunction”

I have a web application that runs over a Centos Server. It was written in php and python. Suddenly without modification something starts to works in alternate and randomly way (one time fileB.php is ...
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0answers
35 views

Postfix: milter-reject: END-OF-MESSAGE from localhost

I'm unable to send mails via Postfix. I have configured opendkim to work with postfix. Postfix status output: root@remote-server:~# systemctl status postfix ● postfix.service - LSB: Postfix Mail ...
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1answer
54 views

Configure cloudflare subdomains for mailchimp

I've managed to successfully configure mailchimp with cloudflare (using CNAME and TXT records as advised here: https://bobandedovic.com/blog/technology/how-to-authenticate-a-domain-name-on-mailchimp-...
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1answer
52 views

Send a percentage or count of emails to another server with Postfix

We are moving our Postfix outbound mail servers into an AWS region. We have the new external IP addresses with neutral reputation and can't move the old ones. We'd like to warm up the new IPs before ...
2
votes
1answer
56 views

Not receiving any RUF DMARC reports (forensic) but are getting RUA (agg reports)

For about 5 days now, i have been successfully receiving several DMARC RUA (aggregate reports) reports from a few ISPs, however i have yet to receive a single RUF message/forensic email, even though ...
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1answer
44 views

Exchange Hybrid Migration

Apologies if this question has been answered before. We are going for Exchange hybrid migration to EOL (Exchange Online). On-premise, we have Exchange 2016 mailbox and Exchange 2016 Edge transport ...
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1answer
18 views

Diagnose Avaya IP Config to SMTP

We have 10 phone extensions that instead of gettings messages on the phone, we configured the Avaya IP Office to forward messages to a specific email for each extension. The SMTP server adress is ...
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0answers
26 views

configure supermicro x10 ipmi email alert?

does anyone know how to configure a Supermicro X10dri to send out email alerts through its IPMI interface? I am trying to use a gmail account and have already enabled less secure apps.
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0answers
26 views

Virtual unified inbox in dovecot

I have a wildcard alias for my domain @foo.bar root@foo.bar and a sieve filter which moves mails to the folder INBOX.${alias}. require ["variables", "fileinto", "regex"]; if address :matches "to" ...
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1answer
14 views

How to disable EOP for the whole organization in our exchange hybrid environment?

set-MailboxJunkEmailConfiguration -enabled $false only disable the EOP for mailboxes. it cannot ensure new mailbox's EOP is also disable. So what is the solution? Thanks.
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0answers
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Postfix - External incoming mails with company domain

We use postfix as internal and external relay and Exchange inside the organization. Our company is receiving a lot of SPAM and phising mails whose Sender is our own company domain. Searching Exchange ...
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1answer
67 views

No package php-imap available on CentOS 6

I'm running a dedicated server with CentOS 6 64bit, here is the output when trying to install IMAP: [root@localhost ~]# yum install php-imap Loaded plugins: fastestmirror Loading mirror speeds from ...
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1answer
53 views

SPF record permerror showed in an email header, but no reason for it

Our customers are complaining about the spam issue. There are a number of spam emails which are not tagged as spam emails. These spam emails were sent from forged seneder address, which means our SPF ...
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1answer
21 views

SPF and Gmail as mail client

I have mail server hosted by some "3rd party provider" (https://www.neoserv.si/) and I want to use Gmail as email client. In Gmail I have set POP3 to copy all incoming messages and IMAP so I can send ...
4
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2answers
756 views

Email Spoofing Or Something More Sinister? [closed]

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 "...
0
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1answer
52 views

GMail and Yahoo not accepting DSN option from RCPT extended commands

i'm sending mail from my mail server using python sendmail along with NOTIFY,RET,ENVID options. When i send a mail in above said procedure to an outlook mail id i'm receiving dsn. But when i send a ...
2
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0answers
95 views

IMAP connections from Microsoft IP addresses when using Outlook

I run a Linux based mail server and use Dovecot to provide IMAP over TLS access. This server has been up and running for a bit more than 8 years now and it serves my email address along with those of ...
2
votes
1answer
37 views

Mail blocked from Windows Server 2016, but not since 2008

Good Morning: I'm running exactly the same script from two different virtual machines: The first in Windows Server 2008 R2 The second in Windows Server 2016 Features The SMTP is an external ...
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2answers
16 views

get all sender's list from vmail directory

I am trying to build an email list. I would like to get the email addresses from an email incoiming mails directory (vmail/..../cur). I use dovecot, but I think it does not matter. Is there a way to ...
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1answer
45 views

How can I redirect mydomain.com traffic to www.mydomain.com without affecting email?

I'm very new to this so bear with me. I have a NameCheap account for DNS, an Amazon AWS Elastic Beanstalk account for hosting, and a Google GSuite account for email. I want to set up my DNS so ...
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1answer
17 views

SPF and DMARC protection

Today while working at my company, we saw allot of automatic reply emails coming into one of our group inboxes (i.e. info@company.com). We suspect that this email address is being used in a phishing ...
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1answer
29 views

Have DKIM and domain authorization/authentication setup but mail is still sent to spam. Why?

As the title states I have everything setup for my domain and sender email(s) as far as authorization and authentication in Amazon SES. Still, any emails sent from my domain are still being sent as ...
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0answers
19 views

smartd daemon email frequency

I am struggeling with smartd.conf and disk auto-test/emails. My settings now: I set my MAILADDR in mdadm.conf and also ran smartd.service and ever since iam receiving info about disk failures, but ...
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0answers
11 views

How can I forbid my email client (Mail iOS) to send email to a specific email address

What I mean! Iam in conflict about business or speak about a matter with someone. Instead of sending the message to the person I speak, I send the message to the person/company that I talk about! ...