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erics, August 4th, 2016 To force sendmail to process the mail queue, execute as root: sendmail -q -v The optional -v enables verbose mode to assist with troubleshooting. To display the current contents of the mail queue, execute as root: mailq
Categories: How-To's, Technology Email, Force, howto, mail, Mail Queue, Mailq, Q, Queue, SendMail, tips
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erics, June 17th, 2016 Jun 17 00:02:45 inbound dovecot: IMAP(yourName): Corrupted index cache file /home/yourName/Maildir/dovecot.index.cache: invalid record size
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service dovecot stop cd /home/yourName/Maildir/ rm dovecot.index* service dovecot start |
As always, YMMV. Proceed with caution.
Categories: How-To's, Technology AWS, Cache, Cache file, Corrupted, Corrupted index, Dovecot, Email, File, howto, IMAP, Index, Linux, mail, Mailhost, PostFix, tips
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erics, April 22nd, 2015 By default, Postfix restricts attachment size to about 10MB (10240000 bytes). You can check the current value by running the following command: postconf | grep message_size_limit To change the attachment size limit to say 50 MB, run a command like: postconf -e message_size_limit=52428800 You may find that the maximum mailbox size is lower than the […]
Categories: How-To's, Technology Attachment, Email, Email attachment, howto, Limit, mailbox_size_limit, Max, message_size_limit, postconf, PostFix, tips
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erics, April 7th, 2015 Create the file /etc/postfix/virtual-regexp. For example, forward all emails with a leading eric and ending with @thewyz.net to a Gmail account:
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/eric.*/@thewyz.net wyzaerd@gmail.com |
Edit the file /etc/postfix/main.cf. Add regexp:/etc/postfix/virtual-regexp to the virtual_alias_maps line. For example:
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virtual_alias_maps = hash:/etc/postfix/virtual, regexp:/etc/postfix/virtual-regexp |
Generate the map .db file:
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postmap /etc/postfix/virtual-regexp |
This example requires the files virtual and virtual.db to exist, even if they are […]
Categories: How-To's, Technology Email, Expression, Forward, howto, main.cf, PostFix, Regex, Regular, Regular Expression, Regular Expressions, tips, Virtual, virtual_alias_maps, virtual.db
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erics, July 11th, 2013 postsuper -d ALL
Categories: How-To's, Technology Delete, Email, Empty, howto, Mail Queue, PostFix, Queue, tips
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erics, January 6th, 2013 To view the Postfix deferred queue: postqueue -p To view a specific email: postcat -q {Queue ID} To delete a specific email: postsuper -d {Queue ID} Example of viewing the deferred queue and deleting a message: # postqueue -p -Queue ID- –Size– —-Arrival Time—- -Sender/Recipient——- E15B9FC221 11627 Sun Jan 6 16:47:29 MAILER-DAEMON (connect to sight.mlorol.com[46.249.46.181]: […]
Categories: How-To's, Technology Delete, Email, postcat, PostFix, postqueue, postsuper, Single
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erics, October 21st, 2012 |
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$valid = validateEmailAddress('yourName@yourDomain.com'); function validateEmailAddress($email = '') { // returns 1 for valid and 0 for invalid return (int) (filter_var($email, FILTER_VALIDATE_EMAIL) && preg_match('/@.+\./', $email)); } |
Categories: How-To's, Technology Email, FILTER_VALIDATE_EMAIL, filter_var, php, preg_match, Valid, Validate
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erics, July 8th, 2011 A fantastic website dedicated to reducing the amount of time we spend dealing with email… www.emailcharter.org
Categories: Technology Email, Email Charter
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erics, June 3rd, 2011 By default, the Postfix SMTP server accepts any sender address. You block email addresses using the sender_access file:
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# cd /etc/postfix # vi sender_access baduser@baddomain.com REJECT # postmap hash:sender_access # vi recipient_access baduser@baddomain.com REJECT # postmap hash:recipient_access # vi main.cf smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender_access smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/recipient_access (make sure these are the FIRST entry on the lines) # /etc/init.d/postfix restart |
Categories: How-To's, Technology Block, CentOS, Email, howto, PostFix, Receiver, Reject, Sender, Spam, tips
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erics, January 26th, 2011 Configure the Smart Host Search for DS in /etc/mail/sendmail.cf and edit as follows: Before: DS After: DSyour.mail.relay.yourdomain.com Configure The Port Search for Mrelay and edit as follows: Before: Mrelay, P=[IPC], F=mDFMuXa8, S=EnvFromSMTP/HdrFromSMTP, R=MasqSMTP, E=\r\n, L=2040, T=DNS/RFC822/SMTP, A=TCP $h After: Mrelay, P=[IPC], F=mDFMuXa8, S=EnvFromSMTP/HdrFromSMTP, R=MasqSMTP, E=\r\n, L=2040, T=DNS/RFC822/SMTP, A=TCP $h 2525 Add the following line appropriately […]
Categories: How-To's, Technology DS, Email, Email Relay, howto, Port, Relay, SendMail, Smart Host, SmartHost, tips
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