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http://postfix.1071664.n5.nabble.com/Deferred-mail-and-transports-and-retries-td59960.html
Deferred mail and transports and retries. Hi all, 1. If a mail is temporarily deferred from a remote MTA, postfix should back-off instantly for some time but I observed this today. Jul 24...
http://postfix.1071664.n5.nabble.com/Deferred-mail-and-transports-and-retries-td59960.html
Deferred mail and transports and retries. Hi all, 1. If a mail is temporarily deferred from a remote MTA, postfix should back-off instantly for some time but I observed this today. Jul 24...
https://support.smtp2go.com/hc/en-gb/articles/223087367
Using Postfix means that queuing and retries are possible if your server experiences connectivity issues. If your app is unable to contact SMTP2GO for any reason, it is still likely to be able to contact a local installation of Postfix, where it can deliver its emails. Postfix can then take control of the email delivery to SMTP2GO.
http://www.tech-g.com/2012/07/15/inspecting-postfixs-email-queue/
Jul 15, 2012 · Inspecting Postfix’s email queue. This post explains how to view messages in the postfix queue, another post on this blog explains how to delete or selectively delete from the postfix queue. 1- Postfix maintains two queues, the pending mails queue, and the deferred mail queue,
https://civicrm.stackexchange.com/questions/17827/civimail-with-postfix-handling-retries
I'm currently investigating switching from direct SMTP to Amazon SES to using postfix (configured to talk to Amazon SES) as I gather this is a more robust approach. I'm slightly confused as to how
https://www.experts-exchange.com/questions/22012506/Postfix-Mail-Retry-Process.html
Hi, Postfix does rate control on some messages if they are not destined locally. That is Postfix just assigns them a timestamp in future. Generally this time stamp will be assigned as much as the mail is waited in the queue is added to to the current time.
https://docs.trendmicro.com/all/ent/imsva/v9.1/en-us/imsva_9.1_olh/imsva_mailque_abt.html
About Mail Areas and Queues . ... the Hold queue stores messages kept on hold for later manual delivery. ... There are 4 values to control IMSVA (postfix) retries. For more information, see Deferred Queue Parameters. For one deferred email message, the lifetime is 24 hours, the first retry attempt is after 15 minutes, the second retry is after ...
https://blog.tinned-software.net/setup-amavisd-new-with-spamassassin-and-clamav-with-postfix/
In the here described setup, postfix passes the incoming mails on to amavisd-new. There, the emails get checked for viruses and spam. After the email is checked, it is sent back to postfix for its delivery. ...
https://www.wisdomjobs.com/e-university/postfix-interview-questions.html
Postfix maintains two queues, the pending mails queue, and the deferred mail queue,the deferred mail queue has the mail that has soft-fail and should be retried (Temporary failure), Postfix retries the deferred queue on set intervals (configurable, and by default 5 minutes) To display the list of queued mails : # postqueue -p
https://opensource.apple.com/source/postfix/postfix-132.2/postfix/html/faq.html
Postfix is a mail delivery system. Postfix does not implement services such as POP or IMAP to read mail. Several POP/IMAP implementations exist that can cooperate with software such as Postfix. Examples of software that is used successfully with Postfix: Cyrus IMAP implements IMAP, POP3, and KPOP, later versions also support TLS. This software ...
https://scottlinux.com/2011/05/26/prevent-postfix-brute-force/
Prevent Postfix Brute Force. By Scott Miller 2011/05/26. ... The maximal number of message delivery requests that any client is allowed to make to this service per time unit, regardless of whether or not Postfix actually accepts those messages. ... You can also optionally put a separate value for max retries for each of these sections if desired.
https://www.linux.com/tutorials/destress-your-mail-server-postfix-troubleshooting-tips-part-2/
Jun 03, 2016 · It then remembers IP addresses within its whitelist and, if it deems one such machine is friend and not foe, then it will push through the email delivery onto an SMTP process. This cache of friendly IP addresses cuts down on how much effort Postfix applies to each valid email, thereby reducing load and delivery times.
http://postfix.1071664.n5.nabble.com/Postfix-group-aliases-delivery-td10558.html
Postfix group aliases delivery. Hi, We have the following problem. A group alias with multiple recipients. Example entry in aliases file: group1: user1, user2, user3, user4, user5,...
https://www.holhol24.com/2014/08/20/20-postfix-interview-questions-and-answers/
Ans: Postfix is a open source MTA (Mail Transfer agent) which is used to route & deliver emails. Postfix is the alternate of widely used Sendmail MTA. Default port for postfix is 25. ... The local program is Postfix’ own local delivery agent. It stores messages in mailboxes. ... Postfix retries the deferred queue on set intervals ...
https://www.cise.ufl.edu/~jnw/SysAdminsp01/Lectures/postfix-html/faq.html
Normally, Postfix attempts to deliver outbound mail at its convenience. If your machine uses on-demand dialup IP, this causes your system to place a telephone call whenever you submit new mail, and whenever Postfix retries to deliver delayed mail. To prevent such telephone calls from being placed, disable spontaneous SMTP mail deliveries.
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