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Questions tagged [email]

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

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

6589 questions
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postfix says mail sent ok, message does not arrive in ISPs inbox? no reject in log?

When I send a test message from my mail server to my @bellsouth.net email, The postfix log shows it was sent OK, but the message never arrives in my bellsouth inbox. Shouldn't I get a failure notice or a bounce if At&T is blocking the messages? I'm…
Nick
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Are SPF needed for domains that do not send mails and do not have MX record?

I have some domains registered that do not send mails. I have totally removed MX record for these domains on my DNS. Is it still useful to set an SPF record in order to avoid spammer to send mails as these domains? I read here that for domains that…
Marco Demaio
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How to redirect all mail from one domain to another in Postfix?

I have two forms of the same domain name, one being a common misspelling of the other, let's say tedswidgets.com and tedswigets.com. I'd like to redirect all mail for @tedswigets.com to that same @tedswidgets.com. There's plenty of…
thomasrutter
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How to Specify outgoing HELO with sendmail?

How do you specify the FQDN (Host and Domain Name) that a mail server presents itself as in HELO/EHLO when sending outgoing email with sendmail?
Kyle Brandt
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Can I make an exception to reject_unknown_client_hostname?

My outer SMTP is blocking some e-mails with the error 450 4.7.1 Client host rejected: cannot find your hostname, which we traced back to the reject_unknown_client_hostname. As it happens, the hostname to which the reverse address resolves does not,…
Daniel C. Sobral
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Why don't my domain's messages to a google group get their headers rewritten so DMARC can pass?

Whenever my domain sends a message to a google group on another domain the DMARC alignment fails. This is true for all my approved senders, even using Gmail in my domain. It seems to be because the Return-Path (Envelope From) header is replaced by…
lordbyron
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crontab sends month-old emails

ubuntu 14.04 Mailserver: Postfix root receives dozen of emails from crontab. These mails contain PHP warnings. I've fixed the cause for these warnings. I've fixed every cronjobs to not send emails (output sent to >/dev/null 2>&1) I've deleted all…
pixeline
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Amazon SES and EC2 instance in different regions

We need to send transactional emails from our e-commerce website hosted on an EC2 instance. Our regular email service is hosted by Google. The problem is that we are based in Asia-Pacific region where SES is not available. So can we change our…
Golmaal
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GMail bouncing mail sent over IPv6, IPv4 working

I have trouble sending email to GMail addresses using IPv6 from my domain camgirltools.net If IPv4 is used, everything works as intended, the mail is delivered. When using IPv6 to send mail to GMail (other parties work) I get a bounce mail…
Johannes H.
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How widely supported is forced TLS on inbound SMTP connections?

I run an MTA consisting of the standard Postfix, SpamAssassin, ClamAV, SPF/DKIM checks etc. This MTA is used for inbound email only, doesn't host any accounts and forwards any mail that passes said checks to a shared webhost. I'm aware that a few…
Craig Watson
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How I stop spam backscatter rendering email on my domain unusable?

Some miscreant is using non-existent accounts on my domain as a forged sender for spam emails (i.e., sdfhdfsg@mydomain.com). All the out-of-office and spam rejection emails are coming back to me (since my domain is set up to pass me anything…
Rob Cowell
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How can I reduce the damage of stolen mail accounts?

Currently I’m offering some webhosting to a few advertising agencies for their premium customers. But currently I have a great problem with the E-Mail Service. In the last week, the E-Mail Accounts of about 7 companies were stolen and used to send…
user39063
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Setting up DomainKeys

I've tried improving the security of my emails (and preventing them from being marked as spam) by adding the SPF and DKIM records. So I've created both of them and I tested the results with check-auth@port25.com. This is the…
entropid
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How do I find out what mail program is installed/sending emails?

I'm trying to find out what emailing program (if any) is sending emails on my server. My employer has a few servers, most of which use sendmail, but on 2 of our servers I'm not finding an email program, but somehow email has been sent with it? I…
skplunkerin
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How do I count the messages of Postfix's mailq?

How can I get number of messages count in Postfix's mailq? mailq command display entire mails in mailq but i would like to know count only.Is there any command for this. My OS is centos 5.5.
Sai Ye Yan Naing Aye
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