Debatable I think. I don't have any facts or figures but from here when we used to 4xx/5xx them during connection we got tons of woodpeckers, they kept retrying. Once we went to after RCPT TO the woodpeckering went away.
Which raises the question; Does the extra time in the connection waiting for RCPT TO add up to more load than the woodpeckering. Don't have the answer but my gut tells me we are better off waiting for RCPT TO. But do watch the 4xx's on connection, those are usually interpreted as a temporary failure and invite a retry. From: Don Andrews [mailto:don.andr...@safeway.com] Sent: Friday, June 05, 2009 1:02 PM To: MS-Exchange Admin Issues Subject: RE: Problem Receiving Lyris Email I'd agree about the usefulness of Mail From: and Rcpt to: for troubleshooting at times but from a load perspective, refusing the connection before starting the SMTP conversation makes sense too. Depending on the particular DNSBL the IP is on, we might give a 4xx or 5xx along with some (admittedly cryptic) DNSBL info. ________________________________ From: Kennedy, Jim [mailto:kennedy...@elyriaschools.org] Sent: Friday, June 05, 2009 9:38 AM To: MS-Exchange Admin Issues Subject: RE: Problem Receiving Lyris Email The Cuda is different, if you set the option to do it differently. You can reject on connection if you want or set it to wait until after RCPT TO and then it replies with a 5xx. That also gives you sending and to email addresses. Sometimes useful info for troubleshooting. Waiting until after RCPT TO is probably the better way. More email servers will honor that as a fatal and not retry. If you do it during the connection cycle many will keep retrying for 48 hours. From: Don Andrews [mailto:don.andr...@safeway.com] Sent: Friday, June 05, 2009 11:57 AM To: MS-Exchange Admin Issues Subject: RE: Problem Receiving Lyris Email In our system the connection is rejected due to DNSBL - It never gets far enough to start attempting to send a message - therefore we'd never see an email rejection - this is just fyi as the barracuda may be different. ________________________________ From: Carol Fee [mailto:c...@massbar.org] Sent: Friday, June 05, 2009 7:37 AM To: MS-Exchange Admin Issues Subject: RE: Problem Receiving Lyris Email Thanks. I don't think this is even a black listing issue. If it was, I would see the emails being rejected by the cuda. It shows every email that arrives at the gate, and it's disposition. Since 5/28, one OOO has appeared which came from exchange.lyris.sunbelt-software.com. That was a reply to my post on Wednesday. The few others I've received have come, like yours, from outside sunbelt. A few people sent me an address at Sunbelt which was posted to one of the other lists in response to folks not receiving list email back in March. I'll let everyone know how this works out. CFee ________________________________ From: Micheal Espinola Jr [mailto:michealespin...@gmail.com] Sent: Friday, June 05, 2009 10:23 AM To: MS-Exchange Admin Issues Cc: Carol Fee Subject: Re: Problem Receiving Lyris Email I sent my email to you directly, to let you know that your messages were at leasy reaching the lyris server. Your issue appears to be with receiving messages distributed by lyris back to you. This is very commonly a mail/spam filtering issue. In situations where no changes were made on your end, its probably attributed to Sunbelt being listed on an DNSBL again. -- ME2 On Fri, Jun 5, 2009 at 9:59 AM, Carol Fee <c...@massbar.org<mailto:c...@massbar.org>> wrote: I stopped receiving email from this list and the NTSysAdmin list on 5/28. Although I have had two reports that my Barracuda is rejecting list email, I do not believe that is true overall. The two emails that I am aware of were not sent through the lyris.sunbelt-software email system. They came from other ISP's. One of these was a reply from Michael Espinola, but it came from Google, not lyris. Aside from one OOO reply to my post to the NTSysAdmin list on Wednesday, which I received, there are no entries in my Barracuda logs for email from either list since 5/28. Yesterday, I unsubscribed from the NTSysAdmin list, and then subscribed this morning. I have not received the email from Sunbelt requiring me to confirm my subscription, and there is no trace of any email from Sunbelt in my Barracuda log. I'm looking for some help from you folks in the way of a reply to this post which would also include cc:cfee1...@gmail.com<mailto:cc%3acfee1...@gmail.com>. I'm also looking for some help from someone at Sunbelt ? Thanks in advance. Carol Fee Network Administrator Massachusetts Bar Association 20 West St. Boston, MA 02111 617-338-0623 c...@massbar.org<mailto:c...@massbar.org> ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
