Hi,
I have got around a dozen customers on Exchange 2010/2013 mailboxes with Simply Mail Solutions (SMS), and all but one are having no issues.
The most recent one is confusing, as the migration was no different to the 11 or so previous ones. Basically, some mail is not being delivered from a 'few' senders. Between myself and SMS Support we found that Kaspersky was filtering out mail and adding it to Blocked Senders, so I have temporarily turned off Junk Mail Filtering via the Web Mail. This seemed to return mail delivery to most of the senders that we were having issues with.
Now, we are aware of one sender that no matter who addresses mail to within our organisation, user1@, user2@ and so on... the mail never arrives, nor does he receive a mail rejection notice, delayed delivery etc. I found out the details for the email and asked SMS to check their server logs and the email never reached the SMS server. I have checked the MX Records for the domain and they remain unchanged (being managed by their web developer).
SMS suggested that I contact the senders mailserver administrator and get them to look at their logs, as they will have more details as to how the message was handled, where it was handled and any rejection messages that were delivered. I plan on doing this on Monday, as I know who runs the mailserver for the sender, but I'm unsure as the level of logs he will have access to.
What do you guys think, how would you proceed?
Thanks,
James
I have got around a dozen customers on Exchange 2010/2013 mailboxes with Simply Mail Solutions (SMS), and all but one are having no issues.
The most recent one is confusing, as the migration was no different to the 11 or so previous ones. Basically, some mail is not being delivered from a 'few' senders. Between myself and SMS Support we found that Kaspersky was filtering out mail and adding it to Blocked Senders, so I have temporarily turned off Junk Mail Filtering via the Web Mail. This seemed to return mail delivery to most of the senders that we were having issues with.
Now, we are aware of one sender that no matter who addresses mail to within our organisation, user1@, user2@ and so on... the mail never arrives, nor does he receive a mail rejection notice, delayed delivery etc. I found out the details for the email and asked SMS to check their server logs and the email never reached the SMS server. I have checked the MX Records for the domain and they remain unchanged (being managed by their web developer).
SMS suggested that I contact the senders mailserver administrator and get them to look at their logs, as they will have more details as to how the message was handled, where it was handled and any rejection messages that were delivered. I plan on doing this on Monday, as I know who runs the mailserver for the sender, but I'm unsure as the level of logs he will have access to.
What do you guys think, how would you proceed?
Thanks,
James