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

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48 views

send outbound postfix email to other server

I have more than 18 mail servers, running postfix. All of them have around 10,000 customers with more than 25,000 email addresses. as we didnt applied password policy before (and cannot apply it now ...
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4answers
99 views

Beginner server local installation [duplicate]

Here's the thing I own a small business and currently my emails are being managed by some regular hosting using cpanel and that I bought a small server and installed windows server and exchange Can ...
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1answer
96 views

How to find the source of outgoing SPAM emails on my Server [closed]

Hello this is my first time here. I do know a little about linux but I can't seem to find out the source of tons of SPAM emails being sent out on my server. Here is a small portion of the QMAIL ...
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1answer
76 views

Disable ClamAV for Amavis

I have a Postfix mail server, using Amavis and Spamassassin to check for unwanted e-mails. I have removed ClamAV because it'd basically freeze the whole server every time someone received an e-mail, ...
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0answers
91 views

When does Postfix not perform lookups in virtual_alias_maps?

I'm having a real pickle of a problem: I have a Postfix 2.6.6 / CentOS 6 server that's set up to forward mail from specific aliases to specific destinations. This is done through a mysql ...
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0answers
37 views

How can I limit the amount of messages SendMail will recieve in a single incoming connection?

Is there a way to limit how many messages can be received by SendMail in a given SMTP session? I have a SendMail server and an upstream application server is trying to send dozens (potentially ...
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0answers
15 views

Email marked as spam, but I am not listed on blacklists [duplicate]

I have a problem with sending emails from my server. The problem is that when I send mails to external addresses such as gmail, hotmail, yahoo, etc, sometimes come to spam. For example, send a email ...
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0answers
47 views

How to prevent emails from my domain through mailing lists to be rejected due to DMARC

I operate my own mail server at speedofsoundgaming.com and mwtd.net. I recently added a DMARC record to my domain to help prevent spam, and once seeing that things seemed to be working, upped the ...
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1answer
47 views

Migrating email host from local MS Exchange to 3rd-party host

This may be a simple question, but so far I've had trouble finding any help that corresponds well to my specific situation. The very small business I work for is planning on "phasing out" the local ...
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0answers
40 views

Some emails don't arrive

Yesterday, somehow a DNS Zone File got removed from Cloudflare. So after re-editing the file everything seemed okay. Now there's the problem that some emails don't arrive in the inbox. Strange thing ...
1
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1answer
60 views

Exchange 2010: Send emails via STMP with custom From address to outside the domain

The requirement(s): (1) Connect to Exchange via STMP and (2) basic authentication and send emails with a (3) custom From address to (4) recipients outside the domain. I was able to get (1) - (3) ...
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0answers
24 views

global autoresponder google apps

We just migrate our main domain to a new one. (@olddomain.com -> @newdomain.com) Now we want that people who send emails to any account in @olddomain.com, receive automatically a message like "the ...
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0answers
109 views

Posftfix - MTA during fwd-connect Negative greeting

I have problem with postfix on Debian Squeezy (Yes. Squeezy). I can't send email, idk why. My postqueue: root@mx-2:~# postqueue -p -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- ...
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1answer
57 views

Using Microsoft Exchange Online to host emails but still allow piped emails in cPanel

I want to use Microsoft Exchange Online to host my emails. I understand this involves changing MX records to point to Microsoft's servers. My issue is that in cPanel I have some piped email address ...
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0answers
11 views

SMESERVER: Mail not receiving, 550 v=spf1 a -all (suddenly appeared 5/21) [duplicate]

My situation is exactly the same - SMEserver 7.51 (yes I know I need to upgrade) been running for years and I get the same spf error message back just starting Wednesday afternoon(5/21). I also tried ...
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0answers
24 views

Email messages not being designated [closed]

All my emails are not being designated. The SPF is neutral or none. I'm using earthlink. I get blocked on some Google groups. How to circumvent this issue.
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1answer
127 views

SMESERVER: Mail not receiving, 550 v=spf1 a -all

SMESERVER install has been working find for an age then this morning "The error that the other server returned was: 550 v=spf1 a -all", can anyone 'point' me in the right direction to resolving this ...
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1answer
752 views

Sendmail: DSN: Service unavailable

I've been having trouble getting my server to send email and I haven't for the life of me figured out how to fix it. If anyone could give me some simple pointers, that would be muchly appreciated! ...
3
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1answer
228 views

A record required for MX record?

Previously our domain, let's call it ourdomain.com, pointed to an IP address (our web host). In addition, we use Office 365 to handle our domain email accounts. DNS records: ourdomain.com A ...
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1answer
356 views

DNS Zone Record: How to set up MX Record correctly? [closed]

I've been search for this for quite a while, and tried many different examples for weeks (because I usually have to wait a couple hours for the DNS change). Nothing made my mail() in PHP as well as my ...
1
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1answer
219 views

User login URL for newkly installed Zimbra mail server

I have managed to install Zimbra 8.0.7 on my Ubuntu 12.0.4 LTS server (I had to rebuild my machine and reinstall the OS, so that no other servers other than Zimbra are running - how to reinstall ...
3
votes
1answer
111 views

Configure Exchange to ignore requests for read receipts on certain mailbox

We have an Exchange (2010) mailbox that is automatically monitored by a windows service, this service connects to the mailbox periodically using Exchange Web Services 1.1 and imports the emails into ...
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1answer
1k views

How to configure synology NAS for SMTP server [closed]

first of all I have to admit that I'm a beginner in this topic. In fact this is my first post. I have a synology 213J that I want to configure as SMTP server. I discovered that I needed a domain in ...
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3answers
94 views

Move mail server to a new server with no downtime

We have a server that currently acts as a web, database and mail server. We would like to move mail to its own dedicated server. So: The address for the mail server is mail.example.com. It has A ...
0
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1answer
76 views

postfix just installed on ubuntu, but mail() not working in php

I have a new server. Just installed Postfix (apt-get install mailutils), and configured postfix as "Internet site". Works fine when I'm logged in as regular user on the command prompt and use "mail ...
2
votes
1answer
95 views

Moving X400 address to user's new mailbox, internal NDR

We have a user who has had access to his old mailbox restricted by management. However, they want them to continue to receive mail in a new mailbox using the same SMTP address. The situation is, the ...
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2answers
54 views

Two Exim servers and redirects

it is a bit fuzzy thing I try to solve so I need to ask you for a help. Our users are divided between two big buildings, that are far from each other, so we set up two independent mail servers so ...
0
votes
1answer
28 views

How to automate sending warning email if USB backup drives are not rotated frequently enough?

Our off-site backup system relies on a staff member alternating which USB drive is connected to the file server each week. Whichever drive is connected then synchronizes with the data partition on ...
1
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1answer
19 views

Disabling network access for a group of users but allowing smtp only

We have an environment where our users ssh into the system and their shell is set to simply launch Mutt on their $HOME/Maildir. We want to restrict our users to only be able to send/receive mail. We ...
2
votes
1answer
262 views

nginx: understanding the purpose of auth_http (IMAP proxy)

I would like to send IMAP client requests to an IMAP back-end via an nginx proxy. According to the the mail_auth_http module, a directive auth_http has to be used in order to authenticate the clients. ...
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votes
1answer
1k views

Mail delivery failed for a message I didn't send [duplicate]

I have started to receive emails with the subject: "Mail delivery failed: returning message to sender" for emails I haven't sent. I host my own mail server at my domain matos-sorge.com (a linode) and ...
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0answers
31 views

Forward incoming email traffic

I have two CentOS servers - one for email and one for web hosting. One domain, which we do not control, has the MX record incorrectly pointing to the web host. What iptables config is needed to ...
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1answer
189 views

“Postfix SMTP server: errors from *” repeated automatic response

I'm attempting to setup a mail server with Postfix and Dovecot. It's not really working all that well, but there's something more urgent I'd like to get fixed first. I sent a few test e-mail ...
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votes
1answer
21 views

Postfix with Clamd

I've been setting up my own VPS for an e-commerce, as well as a mail server. In order to setup the e-commerce, mysql and apache is running. In order to setup the mail server, I've installed postfix. ...
1
vote
1answer
463 views

Is it possible to receive inbound emails using Mandrill?

I am using Mandrill mail server for sending emails to users and I have my own domain added to Mandrill to send out mails. Suppose I have configured Mandrill to use info@mydomain.com to send out emails ...
0
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1answer
110 views

Unable to clear sendmail mqueue-client

drwxr-xr-x 2 smmsp smmsp 4.0K May 6 23:31 mqueue drwxrws--- 2 smmsp smmsp 29M May 8 10:40 mqueue-client As you can see mqueue-client is filled with 29 megabytes of unsent mail. This seems to ...
0
votes
1answer
38 views

Moving domain off of Windows server, how to move the emails over?

I am trying to move a domain (website and email server) from a Windows 2003 server to a Linux server. Moving the website and database over has been tedious (but successful) but I'm not sure how to ...
2
votes
1answer
51 views

IMAP Email issue - Not logging in with correct password

A little while ago, my email stopped working all of a sudden. The email is hosted on a cPanel server, and it seems to be just my accounts (I have 2 different emails, on 2 domains that are both not ...
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0answers
33 views

If my SES SMTP credentials are compromised can my SES API usage (using access key+secret) be affected

We want to setup our corporate SMTP server to use AWS SMTP, which uses credentials separate from the AWS Access key and secret. I am thinking that Amazon keeps these separate so that if someone is ...
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2answers
210 views

Setting up SPF records on dedicated server

I have a question in regards to SPF records in a dedicated hosting environment. I wish to set up an SPF record for my dedicated server, but I am not sure whether my understanding is correct. First ...
1
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1answer
32 views

Postfix Relay Based on Recepient

What is the best practice when one has to implement this sort of ruleset in postfix? Email sent to a@example.com, b@example.com, etc ought to be relayed to smtp.a.example.com. Email sent to ...
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0answers
53 views

How can I get openSSL to run on my web server with a PHP5-FPM chroot?

On my web server, I changed the chroot to only have access to the root of my website's home directory as opposed to the rest of the file system, for security purposes. However, I've noticed that since ...
0
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2answers
420 views

Why is my email being rejected?

I am having problems sending an email from one email address to another on my domain. I am using a shared server. I use weather software which automatically constructs and sends the email message. I ...
0
votes
2answers
171 views

What's up with Alfresco failing due to mail errors?

Not sure how to troubleshoot this one as our Alfresco server suddenly decided it no longer wants to send mail (or let us do any operation that attempts to send mail, such as approving documents). I ...
3
votes
1answer
107 views

Make Postfix use MySQL to check whether sender adress is permitted

We're trying to use PostFix to check whether the sender email-address is permitted to send to a specific email-address. Another way to describe it would be that I want specific e-mailaddresses to ...
0
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0answers
26 views

Microsoft servers blocking e-mails [duplicate]

I have developed a CRM that sends out e-mails using a simple PHP mail function. Sadly whenever an e-mail is sent to a Microsoft account, it does not appear. Not even in the spam folder. All other ...
2
votes
1answer
144 views

Sending an e-mail in Windows 2003 on logon

We have a requirement to send an e-mail to a specific address when any user logs on. This is on a Windows 2003 server, does anybody know or can point me in the right direction on how to do this? I ...
0
votes
1answer
40 views

How do I identify who initiated mail delivery using my postfix?

I use debian with postfix as MTA. Recently I noticed a huge mail traffic outgoing of my server. How do I identify the origin (initiator) of the mails? I suppose the "from" field in my logs (mail.log, ...
0
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1answer
33 views

What is the maximum message size that SendMail can successfully receive and where would the bottlenecks be?

CentOS 5.x | SendMail 8.14 I'm curious - what is the largest message size that SendMail will successfully accept from an upstream source via SMTP? The tweaking config options page indicates that by ...
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1answer
1k views

Postfix/smtpd: Client host rejected: cannot find your hostname

I'm trying to set-up a mail server, using postfix and dovecot. Everything works fine, and I can connect in IMAP using Mozilla Thunderbird. But when I'm trying to send emails using the smtp server, I ...