Questions tagged [email-server]
Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.
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What ports to open for mail server?
I have just finished setting up a Postfix mail server on a linux (ubuntu) platform. I have it sending and receiving email and it is not an open relay. It also supports secure smtp and imap.
Now this ...
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Why can't MX records point to an IP address?
I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server.
But, in principle, ...
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Do SPF Records For Primary Domain apply to subdomains?
I have a quick question regarding SPF records: Do they need to be present for all subdomains?
Lets say that I have a TXT record with SPF info for domain.com
Let's also say that I have a seperate ...
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Is Postfix the same thing as Sendmail?
I have Postfix setup on my server so that I can send outgoing mail using the command-line:
mail -s "Subject" [email protected]
Is this using Sendmail or Postfix ?
Is "Sendmail" just a software ...
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Is greylisting still an efficient method for preventing spam?
I've used greylisting on my servers for many years, but I don't know how effective it is nowadays.
Is it still good for fighting spam in 2012?
Or is the typical spammer MTA capable of resending ...
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Postfix: Recipient address rejected: User unknown in local recipient table
When I try to send an email on my postfix server to an address on the same domain (for example, if the server hostname is mail.example.com and I try to send an email to [email protected]), I get the ...
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How can I see the contents of the mail whose ID I get from mailq command?
I used mailq command and I got a line like for example:
A705238B4C 603953 Wed May 23 11:09:58 [email protected]
So, now I'm wondering is there a way where I can "read" an actual content of the ...
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"My unqualified host name (foo.bar) unknown" Problem
When trying to start sendmail or send a mail using a wordpress plugin, this error shows up in the maillog:
"My unqualified host name (foo.bar) unknown; sleeping for retry"
After Googling the best ...
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Is it becoming impossible to be a small mail provider?
I operate a small mail server for my private emails, some friends who have websites and two NGOs. In total my server sends between 60 and 400 messages a day. Now a lot of these emails are personal ...
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Why Does hotmail still reject my emails?
I have a very strange problem with my emails being marked as spam by hotmail.
I just have configured Postfix + Dovecot on my server and all works perfectly. I can Send/Receive emails. I only have ...
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Sending malicious email as a test
I have set up a working SMTP relay together with MailScanner.
This SMTP relay is not — and will not be — able to relay email from the outside, only local email.
Is it possible to send a ...
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Can postfix be set up to forward mail to multiple recipients
I have the following postfix virtual file:
[email protected] [email protected]
This correctly forwards all emails to [email protected] to [email protected]
However I would like to forward these emails to bob2@me....
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Good idea? Refuse incoming emails with our own domain ending? (because they must be fake)
I have a question about our Exchange Server:
Do you think it is a good idea to refuse incoming external e-mails that have our own domain in the ending?
Like external eMail from [email protected]?
...
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How should I test Clam Anti-Virus?
I have setup a new email server and now I need to test that Clam Antivirus is scanning messages correctly.
How should I do this in a safe and controlled way?
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What kind of mail server do you use?
There are a lot of mail servers out there. Microsoft Exchange has been the dominant corporate mail server in the enterprise on Windows, but I've been using Kerio Mailserver for a long time now and am ...
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Which IMAP flags are reliably supported across most mail servers?
I am writing an application which reacts to emails sent to a mailbox. It retrieves the emails via IMAP. It will be deployed to a number of systems where I do not control the mail server configuration.
...
Ben Butler-Cole
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Best Practices for preventing you from looking like a spammer [duplicate]
I'd like to feel more confident setting up mail for my clients with regards to false positives. Here's what I know:
SPF records are good, but not every spam filter service/software (SFSS) uses them.
...
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3
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Has my ISP mangled my DNS reverse lookup record for a single static IP address?
I've taken on the task of running a small email server, and the world of spam makes it more challenging for an individual, as many MTAs are highly paranoid about accepting email.
I think I've ...
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Fixing My MTA's Poor Reputation
I have a web site that needs to send email to customers to deliver files that they have purchased. Reliable email delivery is vital to this business. Unfortunately, most of the emails sent by my ...
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what is sensible-mda and do i need it?
I'm running Ubuntu Intrepid, and have been seeing the following my logs:
Aug 23 16:01:03 wp1 sm-mta[13700]: n7NFJIad013566: Warning: program /usr/sbin/sensible-mda unsafe: No such file or directory
...
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Postfix Temporary lookup failure
I am trying to set up postfix, but I get a "Temporary lookup failure" error
main.cf:
inet_protocols = ipv4
inet_interfaces = all
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
...
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Should I run my own MTA?
I need to send a large volume of emails, roughly 60.000 per week. At the moment we outsource this service to a third party, and we expect to double our volume within the next 6 months.
Since the ...
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3
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Identifying which MTA is running
I dont have knowledge on linux and how can i know which mail server is running on my linux box? Postfix/Exim? Btw Didn't found postfix folder in etc/, where can i find master.cf? .Any idea for modify ...
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ssmtp change " From: "root" <xy@com>" root name
My root user send emails with ssmtp. However I can't change "From: root ..." root name. Is there any way to send email with another name without using another user?
Tried:
echo 'From: "New name" ' | ...
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Is it possible to send and receive an email from an IP address instead from a domain?
Usually an email has a domain name on the right side of the @, so you can identify an organization or a company. This domain is in fact nothing other than a "name" or an "alias" for an IP address, ...
user242212
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1
answer
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How read mail from /var/spool/postfix/deferred?
Is there a way to read deffered mail from /var/spool/postfix/deferred. I tried to copy file to my mail directory and see it from webmail but it dosnt work. When im using less or cat it seems like ...
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Forward incoming mail on Linux server?
I am trying to set up mail forwarding on a new server of mine. For example, I want [email protected] to forward all email sent to it to, say, [email protected]. I do not need/want to be ...
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Minimal setup for sendmail to send outgoing email only?
I run a simple server that I administrate remotely, and I need it to be able to send an email to my personal email address every time an error occurs. With the default setup on Ubuntu, sendmail just ...
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Which anti spam DNS blacklists should used?
i want to protect my mailserver with dns blacklists for fighting the spam.
there a so many blacklists out there.
currently i use:
ix.dnsbl.manitu.net
cbl.abuseat.org
bl.spamcop.net
safe.dnsbl.sorbs....
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Configure Postfix to only allow outgoing mail from localhost
How do I configure the Postfix mail submission agent to only allow emails to be sent out from a user on localhost , but allow the Postfix mail transfer agent to receive mail from anywhere?
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Setting up SPF and DKIM records of a subdomain
I need to setup SPK and DKIM record for mail.mydomain.com. I have set the following at namecheap -
For SPF -
Record type :TXT
Hostname : mail.mydomain.com
Value : v=spf1 ip4:x.x.x.x ~all
For ...
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PTR record (rDNS) for multiple domains on a shared IP address
I host multiple domains on a single IP address:
cats.com
A @ --> 10.20.30.40
A mail --> 10.20.30.40
MX @ --> mail
dogs.com
A @ --> 10.20.30.40
A mail --> 10.20.30.40
MX @ --> ...
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How can I query postfix to test is an address is in the virtual address file?
Is there something I can run from the command line that will let me query postfix (running locally)?
if an address is in the virtual address file and,
where the mail for that address is routed to.
...
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How difficult is it to setup a mailserver?
I want a secure mail solution, as I am looking to move away from Google and other parties looking into my private data.
How much of a PITA is it to setup my own mailserver? Should I go for an ...
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How to collect bounces in postfix
This is related to this question:
linux - Ways to get a bounceback report for my newsletter application? - Server Fault
Let's say I'm generating email addresses like this when I send out ...
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Is there any way to see if the mail sent by my server was received by the recipient server?
I've sent an important email that the recipient claims it wasn't received by them.
They say that they asked their IT team to see if the email was received in their server. According to them the email ...
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How to remove Postfix queue messages sent to a specific domain
I have a server with multiple domains. How can I clear all Postfix queue messages for a specific domain?
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Spamassassin flagged something as spam that is not spam. How do I tell it so?
This is sort of a general question about training spamassassin. I have a newly set up mailserver which filters incoming mail through spamassassin. I recently got a flight reservation flagged as spam (...
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How do I temporarily suspend mail delivery to a specific domain (non-local) with Postfix?
Using Postfix and custom transports I can manage delivery speeds depending on the recipient's domain. (For example, I send max one message per second to *@hotmail.com)
I also use similar rules to ...
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postfix: connect to Milter service inet:127.0.0.1:8891: Connection refused
I noticed that there is a error with milter if I type service postfix status :
Jul 01 17:39:01 mail postfix/cleanup[13921]: warning: connect to Milter service inet:127.0.0.1:8891: Connection refused
...
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What is the best method for sending email on behalf of my clients' domains?
I wanted to know the best way to make my mailserver send emails on behalf of my clients' domains, without being greylisted and also avoiding bounce problems.
I've been reading some other questions ...
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How to determine a reasonable attachment size limit?
I'll confess this is an area where I'll give it 10-20mb and toss out an "email is not intended for file transfer" whenever a user gripes about having to use FTP.
But a shiny new mail server deserves ...
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Do you use postfix or qmail and why [closed]
I am setting up a server and I have the choice of installing qmail or postfix. Can someone help me make the right choice.
Thing I like to see covered are:
- Performance
- Ease of setup
- ...
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Benefits of using a subdomain for sending email?
Assume I own the domain name, example.org. I am creating a setup where I receive email sent to [email protected] using Google Apps. The MX records for example.org already point to Google's servers and it ...
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Are separate dns records necessary for web and mail on a single server?
When setting up a web/mail server on a single server or VPS with one IP address almost every guide online follows the same structure for DNS:
example.com. IN A 192.0.2.0
hostname....
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Minimum PostFix configuration for sending emails only?
My servers are currently on sendmail which is not very efficient. I'd like to migrate to PostFix.
I'm using Google Mail for Domain for handling incoming email so I need to setup PostFix to send ...
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Mail server for Windows 2008
I'm going to get a Windows 2008 dedicated server sometime soon. I'm going to have my website hosted on it, so, I also want to run a mail server on the same machine to receive any mail sent to the ...
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Why does DMARC operate on the From-address, and not the envelope sender (Return-Path)?
Several emails sent from my webserver to a Gmail address, where the From: address is [email protected], have been marked as spam by Gmail. The From: field is populated from form data, and ...
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Sendmail: Sender address rejected (Domain not found)
I'm running into problems with sending mail on our webserver. Some mails are sent and delivered without any problems (eg Gmail), while others are deferred with "Sender address rejected: Domain not ...
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how to find out where email is being hosted for a website
Is there a whois equivalent to find out the hosting details for email?
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